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920-333 Communication Server 1000 Rls. 5.0 Upgrades for Technicians.

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920-333 exam Dumps Source : Communication Server 1000 Rls. 5.0 Upgrades for Technicians.

Test Code : 920-333
Test denomination : Communication Server 1000 Rls. 5.0 Upgrades for Technicians.
Vendor denomination : Nortel
: 55 real Questions

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Nortel Communication Server 1000 Rls.

Nortel releases newest Communications Server | killexams.com real Questions and Pass4sure dumps

Nortel has launched the latest version of its Unified Communications Server, the CS a thousand free up 6.0.

The commercial enterprise degree server has the capability to run LAN and WAN as well as providing wireless VoIP and SIP/IP technology. newfangled elements during this up to date edition consist of greater centralisation of management, allowing you to control your community from one place, and Linux-primarily based application presenting diagnostics.

Ian Komor, portfolio chief of commercial enterprise voice at Nortel, referred to: "unlock 6.0 is the subsequent Important software unencumber of the verbal exchange server 1000 platform and a key enabler in addressing trendy company issues of redefining operational can imbue increasing company effectivity and adorning client event."

Nortel likewise claimed the newfangled release is greater comfy and 40 per cent greater energy efficient than an identical Cisco products.

The unencumber is tall trait information for a corporation facing decline in the present climate. ultimate month, Nortel offered a few of its wireless belongings, specifically its CDMA and LTE businesses, to Nokia Siemens. The company additionally verified it changed into trying to promote more of its companies in the future.

Nortel introduces newfangled edition of communique server | killexams.com real Questions and Pass4sure dumps

To advocate telephony-based mostly unified communications

Nortel, a issuer of networking products, has delivered the communique Server a thousand (CS one thousand) 6.0 to advocate telephony-based mostly unified communications.

Nortel said that CS 1000 presents centralisation of functions which are expected to permit organizations to reduce the total can imbue of ownership (TCO) of their community programs.

The enterprise observed that the Unified Communications management solution, a section of unlock 6.0, manages CS one thousand because the community’s unified communications groundwork and provides a framework that permits administration of converged community features.

The unencumber 6.0 additionally expands CS one thousand alternate options for COTS platforms, together with IBM x3350 and Dell R300.

The conversation Server a thousand is a application-primarily based IP PBX. It reportedly provides converged community and telephony features. dispensed over IP LAN and WAN infrastructure, it helps applications together with unified messaging, consumer contact centre, interactive voice response, instant VoIP and SIP/IP telephony.

Nortel Updates UC offering | killexams.com real Questions and Pass4sure dumps

  • Written by
  • Nortel Networks has launched an up to date version of its verbal exchange Server one thousand (CS a thousand). Nortel describes the CS a thousand as a server-based mostly, full-featured IP PBX which serves because the cornerstone of Nortel commerce Unified Communications deployments, proposing the advantages of a converged community plus more than 750 world-classification telephony points.

    The Linux-based mostly release 6.0 of the UC platform offers clients freedom to Make spend of hardware from Dell, Hewlett-Packard or IBM. The CS 1000 v. 6.0 additionally integrates with Nortel’s contact core solution, Contact core 7.0. additionally newfangled is the MG 1010, a features gateway for centralized communications app provisioning and augmented SIP assist.

    together with the brand newfangled release, Nortel additionally debuted newfangled IP handsets and introduced enhancements to its conferencing application.

  • Broadview Introduces Centralized online UC Order device

    the newfangled OfficeSuite UC Order Wizard allows for for collaboration between consumers, its technology companions and Broadview to rapidly and efficaciously deploy the brand newfangled equipment, the commerce spoke of.

  • Toshiba Telecom Debuts newfangled web page

    "Our newfangled site shows how Toshiba's company communications options redefine the workday, for your terms," the commerce said.

  • Mango Voice Debuts newfangled Platform, Incentives for Referral companions

    Mango Voice is centered across the consumer and accomplice journey.

  • Is UC competent for Digital Transformation?

    As agencies Make a mass migration toward digital transformation, some doubt no matter if their unified communications can achieve the equal.

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    Product review: SYMON's NB-24x200 NetBrite parade | killexams.com real questions and Pass4sure dumps

    Looking for a grand appliance for your succor desk or tech advocate center? Bill Detwiler reviews SYMON's NB-24x200 NetBrite Display. But breathe ready for some sticker shock!

    Keeping your convene center/help desk employees informed is essential in today’s fast-paced workplace. Most convene centers are plagued by predicaments fancy network outages, telecom problems, application errors, and personnel issues on a daily basis, and technicians exigency constant updates on issues affecting their clients.

    How achieve you maintain your operators in the know about current problems? You may hold a big marker board on which valuable information is written or a corkboard with sheets of paper pinned to it, or perhaps you just yell out notices across the room. The SYMON NB-24x200 NetBrite parade provides a better, high-tech alternative to these approaches, in spite of its hefty price tag.

    Technical specifications and softwareThe NB-24x200 board features a 24x200 LED array; its dimensions are 64.2 x 10 x 5.4 inches, and it weighs a diminutive over 32 pounds. The board consists of 4,800 tri-colored LEDs, a network interface card, and a sound card. It is controlled via SYMON Firmware, which is stored on the board, and SYMON2000 software loaded on a server and client PCs. Their unit arrived in December 1999 with SYMON Firmware 1.0 and SYMON2000 5.0.

    For the succor desk where I work, the SYMON NB-24x200 NetBrite appeared to breathe a pleasant option. Because it’s over five feet long, with bright, tri-colored LEDs, this board is highly visible and supple enough to parade multiple messages simultaneously. The unit can breathe configured with different zones, each able to parade a progression of messages. I decided on three zones, each eight LEDs tall and spanning the board’s entire length. With this arrangement and the system’s five-point font, I can easily parade 40 characters across the board (including spaces).

    SYMON softwareThe SYMON2000 software package consists of several parts—the most essential ones are SYMON2000 Server, SYMON2000 Administrator, and SYMON Says. SYMON2000 Server runs on a Windows NT server and manages communications between the software clients and output devices. SYMON2000 Administrator can breathe installed on either a Windows 95 or NT workstation and provides configuration functions for maintaining the display. SYMON Says is the client component that lets you create, send, and manage messages. The software is smooth to install and use, with an approximate one-hour learning curve. Everything is menu driven and should breathe intuitive for most Windows 95/98/NT users.

    Installation and setupThe board comes ready to install out of the box and can breathe mounted in a variety of locations. They hung the board from the ceiling above their labor area, but it could breathe mounted on a wall or anything capable of supporting 33 pounds. The sign connects directly to a benchmark R45 Ethernet port and 220v power outlet. Once the sign is up and running, SYMON’s Firmware can breathe installed from any network PC. The NetBrite device is located on the network via its MAC address, and a static IP address is assigned during installation.

    The total process went smoothly. Hanging the board took about one hour, and the software installation/network setup took two. By this time, I was excited and ready to descry my denomination in lights.

    CostWhat does totality this grand technology cost? The NetBrite parade itself will set you back about $5,400, and the software and licensing for one server and two clients costs another $2,800. sling in a final $1,000 for one year of maintenance, and you find a grand total of approximately $9,200. This makes the NB-24x200 a fairly costly piece of rig for most businesses.

    The bottom lineDoes your company exigency a product fancy the SYMON NB-24x200 NetBrite Display? It’s highly visible, it’s packed with technology, and it’s smooth to install. But is being able to descry your messages in lights really worth $9,200?

    Our employees fancy it, I’ll admit. But before the SYMON board, their succor desk used (and soundless uses) a big dry-erase board for displaying Important information. When someone needed to proclaim something, they just yelled out the problem and wrote it on the board. This approach was neither flashy nor sophisticated, but it was practical and didn’t cost as much as four newfangled PCs. For more information on the NB-24x200 and SYMON’s other notification solutions, check out SYMON’s home page.

    Bill Detwiler is a technical advocate services associate for a utility company and recently passed his Networking Essentials exam. His specialties are network administration, tech support, and programming. To remark on this article, delight post a remark below or supervene this link to write to Bill.

    Latest Nortel Software Release Offers SMBs newfangled Levels of Simplicity and Unified Communications | killexams.com real questions and Pass4sure dumps

    Common Software Stream Provides Complete, Cost-Effective, and Scalable Solution Across Platforms and into arm Offices

    TORONTO, ONTARIO--(Marketwire - Nov. 3, 2009) - minuscule and medium-sized businesses (SMBs) can obtain productivity, cost-savings and the investment protection faultfinding to success in today's commerce environment with newfangled unified communications-based (UC) software from Nortel* (OTCBB:NRTLQ). The latest software release 5.0 for Nortel's award-winning commerce Communications Manager (BCM) adds newfangled UC capabilities, including unified presence, and greater simplicity with the introduction of a common software stream for BCM50 and BCM450.

    The Nortel BCM450 and BCM50 are Linux-based IP/TDM PBXs delivering application-rich, all-in-one solutions for converged voice and data communications. The BCM50 serves businesses with up to 50 users while the larger capacity BCM450 is suitable for growing medium to big businesses and arm offices with up to 300 users. Each supports a coalesce of IP and digital clients and can enable firms to save up to 70 percent of their original investment by reusing existing equipment.

    As section of the newfangled BCM Rls 5.0 software, BCM450 and BCM50 provide SMBs with dynamic UC features fancy InTouch, which delivers proper federated presence, and well-liked integrated communications applications and capabilities. InTouch lets users communicate easily with anyone in their personal directory – across Microsoft Outlook, Nortel BCM, MSN, and Skype for click-to-call, click-to-IM, and click-to-email. By connecting people faster, improving collaboration and speeding up the time to decision, Nortel estimates that unified communications can succor businesses realize cost-savings and an expand in productivity of up to 18 percent.

    Last year, the Nashville Convention and Visitors Bureau** (NCVB) leveraged its BCM450 solution to book more than 650,000 hotel rooms while marketing tourism on behalf of various partners. NCVB is now trialing BCM Rls 5.0 and plans to roll out the InTouch application in the coming weeks. Kay Hopwood, NCVB's director of Information Technology, is looking forward to seeing real-time presence for everyone on the network and having a view into missed calls even when a caller does not leave a voicemail. For now, NCVB is enjoying the first BCM Rls 5.0 feature it deployed, FindMe/FollowMe (FMFM), which enables simultaneous ringing of up to five additional external devices. "Every convene is potential business," said Hopwood. "With BCM's FindMe/FollowMe capability, their sales team never has to miss another revenue-generating convene again."

    Minitel**, a premier Nortel ally providing service across Canada, likewise chose to crucible BCM Rls 5.0 in its own office production system. Its Toronto vice president of Operations, Dan Silverman, was so pleased with the progress of the in-house crucible he convinced a big accounting solid client to deploy it as well. "The installation was as smooth as could breathe and the client is now rolling out both InTouch and FindMe/FollowMe to multiple users in their organization with ease. They were able to find their client up to accelerate on the interface and rolling the application out by themselves in less than an hour," said Silverman.

    Mexico's Universidad Latinoamericana** (ULA) similarly tested the latest BCM software with positive results. "We are in the commerce of educating today's youth and preparing them for the future and the challenges ahead," said Mario Ahumada Sandoval, subdirector of Systems, ULA. "To achieve so, they count on having the latest in communications technology that helps us offer a rich UC undergo for staff and students. Trialling BCM Rls 5.0, they establish that the product's newfangled feature set enhances their UC experience, while maximizing rig already in place."

    BCM50 customer, Philkeram-Johnson**, the oldest ceramic tile producer in Greece, likewise welcomed the newfangled software release. "Our Nortel BCM50 gives us play to grow, in terms of capacity and functionality, and it delivers the features they exigency to evolve to a unified communications environment," said Christos Syropoulos, commercial manager, Philkeram-Johnson. "We are constantly seeking ways to enhance their products and their productivity so they can respond more quickly to customers. I'm keen to find out more about the newfangled features available in BCM Rls 5.0 and how they can spend them to enhance their communications."

    In addition to the InTouch and FMFM capabilities, BCM Rls 5.0 lets a user forward a voice message using a file so that it can breathe played or read by any mobile device in the world. Meet-Me Conferencing for BCM now provides up to 125 ports with advocate for as many as 300 users. Professional convene Recording, a capability typically supplied by a third party is likewise available as section of the latest BCM release.

    As a further means of streamlining costs and operations making it even more simple for SMBs and Nortel channel partners to install, provision, and migrate pre-existing data, the newfangled BCM50 and BCM450 portfolio includes common software and applications, O/S, training, accreditation, user interfaces, and documentation.

    Dell'Oro ranks Nortel's SMB portfolio #1 in the world in number of hybrid-IP lines shipped and #2 in SMB market revenue for the second quarter 2009. Nortel's BCM solutions are localized and sold in over 120 countries through more than 1000 channels.

    Hear from more BCM users and partners:

  • "FindMe/FollowMe and Message Forwarding allow Charter Telecom's** sales and technical staff to breathe more accessible to their customers, whether in the office or on the road. With the skill for individual users to customize these features to their liking through a Web-based GUI appliance Mailbox Manager. Their system administrator no longer has to Make daily changes. FMFM and the skill to seamlessly transfer calls between their desk phones and cellular phones has likewise allowed us to lower their costs, provide their staff with more flexibility, and expand their availability to customers." – David Harper, voice systems engineer, Charter Telecom - Canada
  • "Our office communications hold been based exclusively on Nortel's BCM systems for years. They recently upgraded to the latest BCM technology, retaining most of their initial investment in hardware and totality of the investment in software licenses. The newfangled UC functionality increases their productivity and saves time. It likewise allows us to connect to other systems fancy Communications Server 1000 and Microsoft OCS. With InTouch they are able to manage their online contacts at MSN and Skype from a lone application interface in MS Outlook, along with their office colleagues, customers, and partners." – Nikos Koulioumbis, SMB solutions director, UniNortel SA** - Greece
  • "Innovative newfangled features such as InTouch with federated presence, FindMe/FollowMe, Professional convene Recording and enhanced CTI applications are totality grand productivity enhancers that will save businesses time and money and this really resonated with the customers they talked to at a recent seminar held in Nortel's Maidenhead office. They had enthusiastic feedback from attendees including a London-based voice and data solutions provider who said he most enjoyed the portion of the seminar that focused on BCM Rls 5.0." – Thomas Jacques, managing director, 1st Communications** - UK
  • "The BCM product has always been one that we've been proud to offer to their customers due to its converged voice and data solution for minuscule and medium businesses. As a longtime channel ally of Nortel's in Mexico, they explore forward to being able to offer those very features, in addition to newly enhanced ones with the newfangled software release of BCM Rls 5.0 with newfangled features such as FindMeFollowMe, Professional convene Recording, and enhanced CTI applications which will expand their customer's productivity." – Jorge Alberto Jimenez Hernandez, director of engineering, Innovaciones Telemáticas, S.A. de C.V.** (INTELEMATICA) - Mexico
  • About Nortel

    Nortel delivers communications capabilities that Make the covenant of commerce Made Simple a reality for their customers. Their next-generation technologies, for both service provider and enterprise networks, advocate multimedia and business-critical applications. Nortel's technologies are designed to succor liquidate today's barriers to efficiency, accelerate and performance by simplifying networks and connecting people to the information they need, when they exigency it. For more information, visit Nortel on the Web at www.nortel.com. For the latest Nortel news, visit www.nortel.com/news.

    Certain statements in this press release may hold words such as "could", "expects", "may", "anticipates", "believes", "intends", "estimates", "targets", "envisions", "seeks" and other similar language and are considered forward-looking statements or information under applicable securities legislation. These statements are based on Nortel's current expectations, estimates, forecasts and projections about the operating environment, economies and markets in which Nortel operates. These statements are subject to Important assumptions, risks and uncertainties, which are difficult to prognosticate and the actual outcome may breathe materially different from those contemplated in forward-looking statements. For additional information with respect to unavoidable of these and other factors, descry Nortel's Annual Report on Form10-K, Quarterly Reports on contour 10-Q and other securities filings with the SEC. Unless otherwise required by applicable securities laws, Nortel disclaims any objective or responsibility to update or revise any forward-looking statements, whether as a result of newfangled information, future events or otherwise.

    *Nortel, the Nortel logo and the Globemark are trademarks of Nortel Networks.

    **This is a 3rd party link as described in their Web linking practices.

    Use of the terms "partner" and "partnership" does not imply a legal partnership between Nortel and any other party.

    Aerospace Acronym and Abbreviation steer | killexams.com real questions and Pass4sure dumps

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    AAF airway facilities service

    AAI Airline Avionics Institute

    AAIPT Aging Aircraft Enterprise Team (Naval Air Systems Command)

    AAIU air accident investigation unit

    AAL above aerodome level

    AALC autonomous approach landing capability

    AAMP advanced architecture micro­processor

    AAR Automated Aerial Refueling

    AATD Aviation Applied Technology Directorate (U.S. Army)

    AATT advanced air transportation technology

    AAS advanced automation system (FAA)

    ABC automatic brightness control

    ABCS Army Battle Command System

    ABSAA Airborne Sense and Avoid

    AC advisory circular

    AC alternating current

    AC2 Dolby surround

    ACAA Air Carrier Association of America

    ACAC air-cooled air cooler

    ACAMS aircraft condition analysis man­agement system

    ACARS aircraft communications addressing and reporting system

    ACAS airborne jolt avoidance system

    ACC vigorous clearance control

    ACC airspace control center

    ACC area control center

    ACD automatic conflict detection

    ACDO Air Carrier District Office

    ACE actuator control electronics

    ACE advanced certification equipment

    ACG Assessment Compliance Group

    ACI-NA Airport Council International - North America

    ACIPS airfoil cowl ice protection system

    ACF area control facility

    ACK acknowledgment

    ACM adjacent seat metering

    ACMF airplane condition monitoring function

    ACMP alternating current motor pump

    ACMS aircraft condition monitoring system

    ACNSS advanced communication/navi­gation/ surveillance system

    ACO Aircraft Certification Office (FAA)

    ACP audio control panel

    ACS vigorous control system

    ACS aerial common sensor

    ACS audio control system

    ACT active

    ACTC airport traffic control towers

    ACTD advanced concept technology demonstration

    ACU aircraft communications system

    ACU antenna control unit

    ACU apron control unit

    ACU autopilot control unit

    AD airworthiness directive (FAA)

    ADA Air Defense Artillery

    ADAHRS air data attitude heading reference system

    ADAS automated weather observing system data acquisition system

    ADB airport database

    ADC air data computer

    ADC Air Defense Command

    ADC analog to digital converter

    ADE application evolution engineer

    ADF automatic direction finding

    ADG air-driven generator

    ADI attitude director indicator

    ADIRS air data inertial reference system

    ADIRU air data inertial reference unit

    ADIZ Air Defense Identification Zone

    ADL aeronautical data link

    ADLP airborne data link protocol

    ADLP aircraft data link processor (Mode S)

    ADM air data module

    ADMS airline data management system

    ADN aircraft data network

    ADO airline dispatch office

    ADO airport district office

    ADP air driven pump

    ADR accumulated Doppler range

    ADR accumulated Delta range

    ADR address

    ADR Advanced Data Research

    ADR alternative dispute resolution

    ADRAS airplane data recovery and analysis system

    ADS air data system

    ADS automatic conditional surveillance

    ADS-A ADS-addressed

    ADS-A ADS-automation

    ADS-B ADS-broadcast

    ADS-C ADS-contract

    ADS-R ADS-rebroadcast

    ADSEL address selective

    ADSP automatic conditional surveillance panel

    ADSSG ADS Study Group (ICAO)

    ADSU automatic conditional surveillance unit

    ADT air data tester

    AEA Aircraft Electronics Association

    AEB Aerial Exploitation Battalion

    AECU audio electronic control unit

    AED automated engineering design

    AEDT Aviation Environmental Design Tool

    AEE Office of Environment & Energy (FAA)

    AEEC formerly Airlines Electronic Engi­neering Committee (ARINC)

    AEO totality engines operative

    AEP ARINC engineering practices

    AEP audio entertainment player

    AERA automated en route air traffic control

    AES aircraft earth station (Inmarsat)

    AESA vigorous electronically scanned array

    AESS aircraft environment surveillance system

    AEW airborne early warning

    AEW&C Airborne Early Warning and Control

    AF airway facilities

    AFB Air favor base

    AFC Aeronautical Frequency Committee (AEEC)

    AFC automatic frequency compensa­tion

    AFC automatic frequency control

    AFCAS automatic flight control aug­mentation system

    AFCS automatic flight control system

    AFD adaptive flight display

    AFD autopilot flight director

    AFDC autopilot flight director computer

    AFDS autopilot flight director system

    AFDX avionics full-duplex switched Ethernet

    AFEPS ACARS front-end processing system

    AFGCS automatic flight guidance and control system

    AFI authority format identifier

    AFIRS autonomous flight information reporting system

    AFIS airborne flight information system

    AFIS automated flight inspection system

    AFM aircraft flight manual

    AFMS airplane flight manual supplement

    AFMS automatic flight management system

    AFN air traffic services facilities notification

    AFP Airspace flow Program

    AFRL Air favor Research Lab

    AFS additional secondary factors

    AFS aeronautical fixed service (ICAO)

    AFS automatic flight system

    AFSK audio frequency shift keying

    AFSS automated flight service stations

    AFTN aeronautical fixed telecommuni­cations network

    AFTRCC Aerospace and Flight Test Radio Coordinating Council

    AFU simulated feel unit

    AGACS automatic A/G communication system

    AGAE A/G applications engineering

    AGATE Advanced general Aviation Transport Experiments (NASA)

    AGC automatic gain control

    AGCOS A/G communication services

    AGCS air-ground communication systems

    AGCU auxiliary generator control unit

    AGD ADS-B guidance display

    AGDL A/G data link

    AGIS A/G intermediate system

    AGL above ground level

    AGR A/G router

    AGRM air/ground router-regional manager

    AGS A/G system

    AGSS ACARS ground system benchmark (AEEC)

    AGTS A/G test station

    AGVS A/G voice sub-network

    AGW ARTS gateway

    AHC attitude heading computer

    AHMS aircraft health monitoring system

    AHRS attitude heading reference system

    AI alternative interrogator

    AI application interface

    AI area incursion

    AIA Aerospace Industries Association

    AIAA American Institute of Aeronau­tics and Astronautics

    AIC aeronautical information circular

    AIDC air traffic services interfacility data communications

    AIDS aircraft/airborne integrated data system

    AIED aeronautical industry engineer­ing and development

    AIEM Airlines International Electronic Meeting (AMC)

    AIFSS automated international flight service stations

    AIL aileron

    AIM aeronautical information management

    AIM airman’s information manual

    AIMS airplane information manage­ment system (Boeing 777)

    AIMS airport information management system

    AINSC aeronautical industry service communication

    AIO analog input/output

    AIP aeronautical information publication

    AIP Airport Improvement Program

    AIP analog input

    AIR Aircraft Certification Service (FAA)

    AIRAC aeronautical information regula­tion and control

    AIRCOM digital air/ground communica­tions service (SITA)

    AIRE Atlantic Interoperability Initiative to Reduce Emissions (FAA)

    AIRMET airman’s meteorological information

    AIRO analog input/reference output

    AIS aeronautical information service

    AIS Automated Identification System (U.S. Army)

    AIS automatic information services (Eurocontrol)

    AISG Applications Interface Sub-Group (IATA)

    AIT Advanced Individual Training (U.S. Army)

    AIV accumulator isolation valve

    AJPS AFEPS journal processing system

    AK authentication key

    AKO Army lore Online

    AL tocsin limit

    ALC airline link control

    ALC asynchronous link control

    ALC automatic even control

    ALMDS airborne laser mine detection system

    ALPA Air Line Pilots Association

    ALPS automatic line protection service

    ALS application layer structure

    ALSF-2 Approach Lighting System with Sequenced Flashing Light-Model 2

    ALT-HOLD altitude hold mode

    ALT airborne link terminal

    ALT altitude/alternate

    AltBOC alternate binary offset carrier

    ALTM altimeter

    ALTN alternate

    ALTRV altitude reservation

    ALTS altitude select

    ALU arithmetic and logic unit

    AM access module

    AM amplitude modulation

    AMASS airport movement area safety system

    AMC acceptable means of compliance (EASA)

    AMC advanced mezzanine card

    AMC Air Mobility Command

    AMC auxiliary maintenance computer

    AMC Avionics Maintenance Conference

    AMCP aeronautical mobile communica­tions panel

    AMD advisory map display

    AME amplitude modulation equivalent

    AMF Airborne, Maritime and Fixed Station

    AMF-M AMF-Maritime

    AMF-SA AMF-Small Airborne

    AMF JTRS Airborne and Maritime/Fixed Station Joint Tactical Radio System

    AMI airline modifiable information

    AML approved model list

    AMLCD vigorous matrix liquid crystal display

    AMIS aircraft management information system

    AMOSS airline maintenance and operation advocate system

    AMP audio management panel

    AMP Avionics Modernization Program

    AMPL amplifier

    AMRAAM Advanced Medium-Range Air to Air Missile

    AMS acquisition management system

    AMS apron management service

    AMS ARINC maintenance service

    AMS avionics management service

    AmSAT American satellite

    AMSL above connote sea level

    AMS(R)S aeronautical mobile satellite (route) service

    AMSS aeronautical mobile satellite service

    AMTOSS aircraft maintenance job ori­ented advocate system

    AMTS aeronautical message transfer service

    AMU ACARS/avionics management unit

    AMU audio management unit

    AMUX audio multiplexer

    ANC Air Navigation Commission (ICAO)

    ANDC airport and navigation data compiler

    ANFR Agence Nationale des Frequences (France)

    ANFS aircraft network and file server

    ANICS Alaskan NAS Interfacility Communication

    ANLP ARINC network layer protocol

    ANP actual navigation performance

    ANP air navigation plan/performance

    ANPA advanced notice of proposed amendment

    ANPE actual navigation performance effect

    ANR vigorous pandemonium reduction

    ANS air navigation system

    ANS ambient pandemonium sensor

    ANSI American National Standards Institute

    ANSIR advanced navigation system iner­tial reference

    ANSP air navigation service provider

    ANSU avionics network server unit

    ANTC advanced networking test center

    AO acronymic obfuscation

    AO area of Operation (U.S. Army)

    AOA ACARS over aviation VHF link control

    AOA angle of arrival

    AOA angle of attack

    AOAS advanced oceanic automation system

    AOC aeronautical operational control

    AOC aircraft operational control

    AOC Airline Operational Control Center

    AOC airline operations center

    AOC airport obstruction chart

    AOC airport operational communications

    AOCC airline operations control center

    AODB airport operational database

    AODC age of data, clock (GPS)

    AODE age of data, ephemeris (GPS)

    AOG aircraft on ground

    AOHE air/oil heat exchanger

    AOM aircraft operating manual

    AOP aeronautical OSI profile

    AOP airline operational procedure

    AOP analog output

    AOPA Aircraft Owners and Pilots Association

    AOR Atlantic Ocean region

    AOR area of responsibility

    AOR-E Atlantic Ocean region-east

    AOR-W Atlantic Ocean region-west

    AP airport location (ACARS/AFEPS)

    APA Allied Pilots Association

    APA autopilot amplifier

    APANPIRG Asia/PAC Air Navigation Planning & Implementation Regional Group

    APAS Active/Passive Aircraft Survivability

    APB acquisition program baseline

    APB auxiliary power breaker

    APC aeronautical passenger communication

    APC aeronautical public correspondence

    APC aircraft power conditioner

    APC autopilot computer

    APCO Association of Public-Safety Communications Officials - International

    APFA Association of Professional Flight Attendants

    APFDS autopilot flight director system

    APEX application/executive software

    APEX Airline Passenger undergo Association (formerly WAEA)

    API application programming interface

    APIM ARINC Industry Activities Project Initiation/ Modification

    APIRS attitude and positioning inertial reference system

    APMS automated performance measurement system

    APL Applied Physics Laboratory

    APLC airport performance laptop computers

    APM approach path monitor

    APN ARINC packet network

    APP approach control

    APPR approach

    APR actual performance reserve

    APRL ATN profile requirement list

    APU auxiliary power unit

    APUC auxiliary power unit controller

    APX application/executive software

    AQF avionics qualification facility

    AQP avionics qualification procedure/program

    AQP advanced qualification program

    AQS advanced trait system

    AR authorization required

    ARB capricious waveform generator

    ARC aviation rulemaking committee (FAA)

    ARD advanced requirement definition

    ARDEP analysis of research & develop­ment in Eurocontrol programs

    ARF airline risk factor

    ARFORGEN Army favor Generation

    ARM area regional manager

    ARMC area regional maintenance center

    ARMS Airspace resource management system

    ARNS aeronautical radio navigation services

    ARP aerospace recommended practice

    ARP airport reference point

    ARP antenna reference point

    ARTAS ATM surveillance tracker and server

    ARTCC air route traffic control center

    ARTP NextGen Aviation Research and Technology Park

    ARTS automated radar terminal system

    ASA aircraft surveillance applications

    ASAS aircraft separation assurance system (AEEC)

    ASAS aircraft surveillance application system

    ASAS aviation safety analysis system

    ASC aircraft system controller

    ASC aural synthesizer card

    ASCII American benchmark code for information interchange

    ASCB avionics benchmark communication bus

    ASCPC air supply and cabin pressure controllers

    ASCS air supply control system

    ASCU anti-skid control unit

    ASD aircraft situation display

    ASDAR aircraft-to-satellite data relay

    ASDB aircraft specific database

    ASDE airport surface detection equipment

    ASDE-3 airport surface detection equipment, model 3

    ASDE-X airport surface detection equipment, model X

    ASDI Aircraft Situation parade to Industry

    ASDL aeronautical satellite data link

    ASDR airport surface detection radar

    ASE aircraft survivability rig (U.S. Army)

    ASE altimetry system error

    ASECNA Agency for Security of Aerial Nav­igation in Africa and Madagascar

    ASG ARINC signal gateway

    ASI airspeed indicator

    ASI avionics system integration

    ASIAS Aviation Safety Information Analysis and Sharing (FAA)

    ASIC application specific integrated circuit

    ASL above sea level

    ASM airspace management

    ASM autothrottle servo motor

    ASME American Society of Mechani­cal Engineers

    ASOR Allocating Safety Objectives and Requirements

    ASOS automated surface observa­tion system

    ASP ACARS sub-network protocol

    ASP acquisition strategy paper

    ASP aeronautical fixed service sys­tems planning (AFS)

    ASP Airspace Systems Program (NASA)

    ASP altitude set panel

    ASP arrival sequencing program

    ASPIRE Asia and Pacific Initiative to Reduce Emissions

    ASPP application specific program­mable processor

    ASR airport surveillance radar

    ASRAAM advanced short ambit air-to-air missile

    ASRS aviation safety reporting system

    ASSA Airport Surface Situational Awareness

    ASSTC aerospace simulation and sys­tems test center

    ASSV alternate source selection valve

    ASTA airport surface traffic automation

    ASTAMIDS Airborne Standoff Minefield Detection System

    ASTERIX All-Purpose Structured Euro­control Surveillance Information Exchange

    ASTF airspace system job force

    ASTM American Society for Testing and Materials

    ASTOR Airborne Stand-Off Radar (U.K.)

    ASVI avionics serial video interface

    ASV alternate servo valve

    AT air transport

    AT at an altitude

    ATA actual time of arrival

    ATA Air Transport Association

    ATAS aviation traffic and application software

    ATC advanced technology center

    ATC air traffic control

    ATCA Air Traffic Control Association

    ATCBI ATC beacon interrogator

    ATCC area and terminal control center

    ATCRBS ATC radar beacon system

    ATCSS ATC signaling system

    ATCT air traffic control tower

    ATIS airport traffic information system

    ATIS automated terminal informa­tion service

    ATIS-B automatic terminal information service-broadcast

    ATDL air transport data link

    ATE automatic test equipment

    ATE avionics test and evaluation

    ATFM air traffic flow management

    ATG advanced concept technology demonstration

    ATHR autothrust system

    ATI airborne tracker illuminator

    ATIDS airport surface target identifi­cation system/ service

    ATIS airport traffic information system

    ATIS automatic terminal information service

    ATL autothrottle limit

    ATLAS abbreviated test language for avionics systems

    ATM air traffic management

    ATM asynchronous transfer mode

    ATMAC Air Traffic Management Committee (RTCA)

    ATMAS ATM automation system

    ATMB Air Traffic Management Bureau (China)

    ATM DSS ATM conclusion advocate service

    ATMS area navigation, test and man­agement services

    ATN aeronautical telecommunica­tion network

    ATNE ATN engineering

    ATNP ATN panel

    ATO air traffic operations

    ATO Air Traffic Organization (FAA)

    ATOL automatic take-off and landing

    ATOP advanced technologies and oce­anic procedures

    ATP acceptance test procedure/plan

    ATPAC Air Traffic Procedures Advisory Committee (FAA)

    ATR acceptance test report

    ATR air transport racking

    ATR air transport radio: ARINC form-factor/ benchmark case dimensions

    ATS air traffic services

    ATS air turbine starter

    ATS autothrottle system

    ATS air traffic service

    ATSAP Air Traffic Safety Action Program (FAA)

    ATSAW Airborne Traffic Situational Awareness

    ATSC air traffic services communication

    AT/SC autothrottle/speed control

    ATSGF air traffic services geographic filter

    ATSMP air traffic services message pro­cessor

    ATSO air traffic services organization

    ATSP air traffic services provider

    ATSRAC Aging Transport Systems Rule­making Advisory Committee (U.S.)

    ATSU air traffic services unit

    ATWR apron tower (and operator)

    AUSRIRE totality Union Scientific Research Institute of Radio Equipment: CIS (former Soviet) agency

    AUX auxiliary

    AVC aviation VHF car rental availability (messages)

    AVH aviation VHF hotel availability (messages)

    AVIM Aviation Intermediate even Maintenance (U.S. Army)

    AVL automated vehicle locations

    AVLAN avionics local area network

    AVLC aviation VHF link control

    AVM airborne vibration monitor

    AVS aviation VHF seat availability

    AVOD audio and video channels on demand

    AVOL aerodrome visibility operational level

    AVPAC aviation VHF packet communications

    AVS aviation VHF seat availability (messages)

    AVUM Aviation Unit-Level Maintenance (U.S. Army)

    AWACS airborne warning and control sys­tem

    AWAS automated weather advisory sta­tion

    AWG American wire gauge

    AWIN advanced weather information system

    AWIN aviation weather information

    AWIPS advanced weather interactive processing system

    AWLU aircraft wireless LAN unit

    AWM auto warning mixer

    AWO totality weather operations

    AWOP AWO panel

    AWOS automated/airport weather observing system

    AWR aviation weather research

    AZ azimuth: angular measurement in horizontal plane


    B-NAV basic area navigation

    BAMS Broad area Maritime Surveillance

    BBML broadband multi-link

    BCD binary code decimal

    BCT Brigade Combat Team (U.S. Army)

    BCTM Brigade Combat Team Modernization (U.S. Army)

    BDA battle damage assessment

    BDA bomb damage assessment

    BDMIS commerce data management and invoicing system

    BDRVT Bi-Diretional Remote Video Terminal

    BDS comm-B designation subfield

    BEA Bureau d’Enquetes Accidents (French equivalent of NTSB)

    BEBS best-equipped/best-served

    BEP back-end processor

    BEPMS BEP management system

    BER bit oversight rate

    BFE buyer furnished equipment

    BFO beat frequency oscillator

    BFS broadband fiber source

    BFT Blue favor Tracking

    BGARS basic general aviation research simulator

    BGI bus award inhibit

    BGP edge gateway protocol

    BI burn-in

    Bi-SC Bi-Strategic Command

    BiG bilingual ground station (ACARS and VDL Mode 2)

    BIH Bureau l’International de l’Heure

    BIS border intermediate system

    BISMS BIS management system

    BIST built-in self-test

    BiSync binary synchronous control

    BIT built-in test

    Bit binary digit

    BITE built-in test equipment

    BIU bus interface unit

    BLK block/black

    BLI budget line item

    BLOS beyond line of sight

    BMV brake metering valve

    BNR binary

    BNR binary numerical representation

    BNS border notification system (squitters)

    BOC binary offset carrier

    BOC bottom of climb

    BOP/COP bit-oriented protocol/character-oriented protocol

    BP bite processor

    BPCU bus power control unit

    BPL broadband over powerlines

    BPS bits per second

    BPSK binary angle shift keying

    BR basic regulation

    BR bridge

    BRG bearing

    BRI basic rate interface

    BRNAV basic area navigation

    BRT brightness

    BSG baseband signal generator

    BSN backbone sub-network

    BSC binary synchronous communication

    BSCU brake system control unit

    BSP board advocate package

    BSU beam steering unit

    BSU bypass switch unit

    BTB bus tie breaker

    BTMU brake temperature monitor unit

    BU backup

    BUEC BU emergency communications

    BUFR binary universal contour for commu­nication representation

    BW bandwidth

    BWAN BU wide area network

    Byte a grouping of eight bits


    C2 command and control

    C3 command, control and communication

    C41 command, control, communica­tions, computers & intelligence

    C4ISR command, control, communica­tions, computers, intelligence, surveillance and reconnaissance

    C-MANPADS Counter-Man Portable Air Defense System

    C/A code course acquisition code (GPS)

    C/NO carrier-to-noise density ratio

    C/R command/response

    C/SOIT communications/surveillance operational implementation team

    C/UT code/unit test

    C&C command and control

    C&W control and warning

    CA conflict alert

    CAA Cargo Airline Association

    CAA Civil Aviation Administration

    CAA Civil Aviation Authority

    CAAC Civil Aviation Administration of China

    CAAFI Commercial Aviation Alternative Fuels Initiative (FAA)

    CAAS common avionics architecture system

    CAASD seat for Advanced Aviation System evolution (MITRE Corp.)

    CAB Civil Aeronautics Board

    CAB combat aviation brigade (U.S. Army)

    CAC caution advisory computer

    CACP cabin area control panel

    CAD computer-aided design

    CADC central air data computer

    CADS centralized automatic conditional surveillance

    CAE component application engineer

    CAGE commercial avionics GPS engine

    CAH cabin attendant handsets

    CAI caution annunciator indicator

    CALSEL variation of SELCAL system

    CAM computer-aided manufacturing

    CAN controller area network

    CANbus control area network

    CANSO Civil Air Navigation Services Organization

    CAOC Combined Air Operations Center

    CAP Civil Air Patrol (U.S.)

    CAP Collaborative Arrival Planning

    CAPA Coalition of Airline Pilots Associations

    CAPS commercial airliner protection system

    CARE cooperative actions on R&D in Eurocontrol

    CARTS Common Automated Radar Terminal System

    CAS CDTI assisted separation

    CAS near air support

    CAS jolt avoidance system

    CAS commercially available software

    CAS computed airspeed

    CASA Civil Aviation Safety Authority

    CASA controller automated spacing aid

    CASCADE Co-operative ATS (Air Traffic Services) through Surveillance and Communication Applications Deployed in ECAC (European Civil Aviation Conference)

    CASE computer-aided software engineering

    CASR Civil Aviation Safety Regulations

    CASS Consolidated Automated advocate System

    CAT categories (I, II, IIIa/b/c) approach

    CAT limpid air turbulence

    CAT computer aided testing

    CATEX categorical exclusion

    CATM Collaborative Air Traffic Management

    CATMT Collaborative Air Traffic Management Technologies

    CAVS CDTI assisted visual separation

    CBA cost/benefit analysis

    CBM condition based maintenance

    CBP Customs and edge Patrol (U.S.)

    CBRNE chemical, biological, radiological, nuclear tall defer explosives (U.S. Army)

    CBT computer-based training

    CC connection confirm

    CCA circuit card assembly

    CCB configuration control board

    CCB converter circuit breaker

    CCD category class diagram

    CCD charged coupled device

    CCD coherent change detection

    CCD cursor control device

    CCIR International Radio Consultative Committee

    CCITT Consultative Committee Interna­tional Telephone and Telegraph

    CCP consolidated control panel

    CCS cabin communication system

    CCS common core system

    CCSD common constraint situation display

    CCTV closed-circuit television

    CD carrier detect

    CD chrominance difference

    CDA continuous descent approach

    CDA coordinating design authority

    CDAM centralized data acquisition module

    CDAM common data acquisition module

    CDG configuration database generator

    CDI course divergence indicator

    CDM collaborative decision-making

    CDMS CDM system

    CDMS control and data management system

    CDP continuous data program

    CDQM collaborative departure queue management

    CDR faultfinding design review

    CDS central dispatch system

    CDS cockpit parade systems

    CDS common parade system

    CDSS cockpit door surveillance system

    CDT controlled departure time

    CDTI cockpit parade of traffic information

    CDU control parade unit

    CDV compressed digital video

    CEC cooperative assignation capability

    CEI cabin rig interfaces

    CENTCOM U.S. Central Command

    CENTRIXS Combined Enterprise Regional Exchange System

    CEP circular oversight probable

    CEQ Council on Environmental Quality

    CF certification

    CF change field

    CFDIU centralized failing parade interface unit

    CFDS central failing parade system

    CFDU configurable file data unit

    CFIT controlled flight into terrain

    CFM cubic feet per minute

    CFM configuration management

    CFMU central flow management unit

    CFR Code of Federal Regulations

    CFS cabin file server

    CG seat of gravity

    CHAIN Compartmented tall Assurance Information Network

    CHI computer/human interface

    CHIS seat hydraulic isolation system

    CI configuration item

    CI cabin interphone

    CID category interaction diagram

    CIDIN common ICAO data interchange network

    CIDS cabin interphone distribution system

    CIE Commission Internationale de I‘Eclairage

    CIGS copper-indium-gallium-diselenide

    CIP capital investment plan

    CIP convergence & implementation program (Eurocontrol)

    CIS common information services

    CIS corporate information system

    CLEEN Continuous Lower Energy, Emissions and pandemonium Program (FAA)

    CLNP connectionless network protocol

    CLNS connectionless network service

    CLTP connectionless mode transport protocol

    CM context/configuration management

    CMC central maintenance computer

    CMCF CMC function

    CMCS CMC system

    CMD command

    CMF common message format

    CMGT compress management

    CMM capability maturity model

    CMM common mode monitor

    CMM component maintenance manual

    CMN control motion noise

    CMOS complementary metal oxide semiconductor

    CMP configuration management plan

    CMS cabin management system

    CMU communication management unit

    CND can not duplicate

    CNDB customized navigation database

    CNES Centre National d’Etudes Spatiales (France)

    CNG 2020+ carbon neutral growth from 2020 and beyond (AIA)

    CNI communications, navigation and identification

    CNP communications/navigation/pulse

    CNR customer notification reports

    CNS communication, navigation surveillance

    CNS/ATM communications, navigation, sur­veillance/air traffic management

    CNSI communications/navigation/surveillance/ identification

    CNUS cabin network server unit

    COA certificate of authorization

    COCOM combatant commander (U.S. Army)

    CODEC coder/decoder

    CofA certificate of airworthiness

    COM cockpit operating manual

    COMINT communications intelligence

    COMINT/DF COMINT direction finding

    COMM communications

    COM/MET/OPS communications/meteorological/ operations

    CON continuous

    CONEMP concept of employment (U.S. Army)

    CONOPS concept of operations

    CONUS continental United States

    CONUSE concept of use

    COP character-oriented protocol

    COP common operating picture (U.S. Army)

    COTP connection-oriented transport protocol

    COTR contracting officer’s technical representative

    COTS commercial-off-the-shelf

    CP central processor

    CP conflict probe

    CP control panel

    CPA closest point of approach

    CPA jolt prediction and alerting

    CPC cabin pressure controller

    CPC controller-pilot communications

    CPC cursor position control

    CPCI computer program configuration item

    CPCS cabin pressure control system

    CPDLC controller-pilot data link commu­nications

    CPE circular position error

    CPI continuous process improvement

    CPM core processing module

    CPM faultfinding path method

    CPR compact position reporting

    CPS cabin pressure sensor

    CPS central processing system

    CPU central processing unit

    CR change of request

    CR connection request

    CR contrast ratio

    CRA conflict resolution advisory

    CRAF Civil Reserve Air Fleet

    CRC cyclic redundancy checking/code

    CRD Concepts and Requirements Directorate (U.S. Army)

    CRD current routing domain

    CRADA cooperative research and devel­opment agreement

    CRDA converging runway parade aid

    CRM crew/cockpit resource management

    CRPA controlled reception pattern antenna

    CRS Congressional Research Service (U.S.)

    CRISD computer resources integrated advocate document

    CRISTAL CoopeRative Validation of Surveil­lance Techniques and Applications (Eurocontrol)

    CRM jolt risk model

    CRM crew resource management

    CRMA code reuse multiple access

    CRR cutover readiness review

    CRS course

    CRT cathode ray tube

    CRTC combat readiness training center

    CRZ cruise

    CS commercial service

    CS common service

    CS control station

    CSC cargo system controller

    CSC common signaling channel

    CSC computer software component

    CSCI computer software configuration item

    CSD Coalition Shared Databases (U.S. Army)

    CSF command/status frame

    CSMA carrier sense multiple access

    CSMA/CD carrier sense multiple access with jolt detection

    CSCP cabin system control panel

    CSDB commercial benchmark data bus

    CSDS cargo smoke detector system

    CSEU control systems electronics unit

    CSMM crash survivable remembrance modules

    CSMU cabin system management unit

    CSP Common Sensor Payload

    CSPA closely spaced parallel approach

    CSPO closely spaced parallel operations

    CSPR closely spaced parallel runways

    CSS cabin systems subcommittee (ARINC)

    CSTAC Commercial Space Transportation Advisory Committee

    CSU channel service unit

    CSU computer software unit

    CSU configuration strapping unit

    CTA control area

    CTA controlled time of arrival

    CTAF common traffic advisory frequency

    CTAI cowl thermal anti-icing

    CTAS seat TRACON automation system

    CTC cabin temperature controller

    CTC combat training centers (U.S. Army)

    CTD cabin training device

    CTL control

    CTMO centralized air traffic flow man­agement organization

    CTOL conventional takeoff and landing

    CTR center

    CTR control zone

    CTRD configuration test requirements document

    CTRL control

    CTS limpid to send

    CTS conformance test suite

    CTS/TCTS combat training system/tactical combat training system

    CTU cabin telecommunications unit

    CU channel utilization

    CU combiner unit (HUD)

    CU control unit

    CUG closed user group

    CUTE common spend terminal equipment

    CV/DFDR cockpit voice and digital flight data recorder

    CVR cockpit voice recorder

    CVRCP cockpit voice recorder control panel

    CW clockwise

    CW continuous wave

    CWI continuous wave interference

    CWID Coalition Warrior Interoperability Demonstration

    CWP central weather processor

    CWP controller/ed working position

    CWS control wheel steering

    CY calendar year


    D8PSK differential 8-phase-shift keying

    D-ATIS digital automatic terminal information service

    D-OTIS data link operational terminal service

    D-TAXI data link taxi clearance delivery

    D-TOC digital transfer of communications

    DA descent advisor

    DA design authority

    DA design altitude

    DA digital-to-analog

    DABS discrete addressable beacon system

    DAC digital-to-analog converters

    DADC digital air data computer

    DADS digital air data system

    DAE defense acquisition executive (U.S. Army)

    DA(H) design altitude (height)

    DAISS digital airborne intercommunica­tion switching system

    DAP digital service access product

    DAP direct action penetration

    DAP downlink aircraft parameter

    DAP download of aircraft parameter

    DAR data access recorder

    DARC direct access radar channel

    DARP dynamic aircraft route planning

    DARPA Defense Advanced Research Projects Agency (U.S.)

    DAS designated alteration station

    DAS digital audio subcommittee

    DAS distributed aperture system

    DASS defensive aids sub-system

    DB database

    dB decibel

    dBA dB adjusted

    DBI downlink screen identifier

    dBI dB referenced to an isotropic antenna

    dBI decibels above isotopic circular

    dBM dB below 1 milliwatt

    DBS direct broadcast satellite

    DBU database unit

    DBU dial backup

    dBW dB-watts or referenced to 1 watt

    DC data communications

    DC direct current

    DC disconnect confirm

    DCA Department of Civil Aviation (Thailand)

    DCAS digital control audio system

    DCD double channel duplex

    DCE data communications equipment

    DCGF data conversion gateway function

    DCL departure clearance (European)

    DCM digital coherent mute

    DCMF data communication management function

    DCMS data communication management system

    DCN document/drawing/design change notice

    DCP data communication process

    DCP parade control panel

    DCS double channel simplex

    DCU data concentration unit

    DCV directional control valve

    DD data delivery

    DD data distribution

    DDA digital differential analyzer

    DDD dual disk drive

    DDL digital data link

    DDM distinction in depth of modulation

    DDP declarations of design and performance

    DDR draft document review

    DDR double data rate

    DDRMI digital distance radio magnetic indicator

    DDS direct digital synthesizer

    DDT downlink data transfer

    DDU data distribution unit

    DER designated engineering representative

    DERA Defense Research and Evaluation Agency (U.K.)

    DEU parade electronics unit

    DF direction finding

    DFA direction finding antenna

    DFCS digital flight control system

    DFDAF digital flight data acquisition function

    DFDAMU digital flight data acquisition management unit

    DFDAU digital flight data acquisition unit

    DFDR digital flight data recorder

    DFDU digital flight data unit

    DFGC digital flight guidance computer

    DFGS digital flight guidance system

    DFIDU dual office interactive parade unit

    DFIU digital flight instrument unit

    DFS Deutsche Flugsicherung GmbH (Germany)

    DFS digital frequency select

    DfT Department for Transport (U.K.)

    DFU digital office unit

    DG directional gyro

    DGNSS differential global navigation sat­ellite system

    DGPS differential global positioning system

    DH conclusion height

    DHCP dynamic host configuration protocol

    DHS Department of Homeland Security

    DI data interrupt

    DIFAX digital facsimile

    DIGNU deeply integrated guidance and navigation unit

    DIP data interrupt program

    DIP dual in-line package

    DIR director

    DIRCM direct infrared countermeasures

    DIR/INTC direct intercept

    DISA Defense Information Systems Agency (U.S.)

    DISC disconnect

    DISCH discharge

    DIST distance

    DITS data information transfer system

    DL data link

    DLAP data link application processor

    DLC data link control

    DLCI data link control identifier

    DLE data link entity

    DLK data link

    DLL data link layer

    DLM data link management unit

    DLME data link and message engineering

    DL/MSU data loader/mass storage unit

    DLNA diplexer/low-noise amplifier

    DLORT data link operational requirements team

    DLP data link processor

    DLS data link service/system

    DLU download unit

    DM disconnected mode

    DMA direct remembrance access

    DMD digital remembrance device

    DME distance measuring equipment

    DME/N DME normal

    DME/P DME precision

    DMM data remembrance module

    DMS data link management system

    DMS debris monitoring sensor

    DMU data management unit

    DoD Department of Defense (U.S.)

    DoT Department of Transportation (U.S.)

    DOTS dynamic ocean tracking system

    DPI dots per inch

    DPR dual port RAM

    DPSK differential angle shift keying

    DR deceased reckoning

    DR deduced reckoning

    DRAM dynamic random access memory

    DRER designated radio engineering representative (FAA)

    DRN document release notice

    DRVSM domestic reduced plumb separation minimum

    DSAD digital service access device

    DSARC defense system acquisition review cycle

    DSB double side band

    DSB-AM DSB-amplitude modulation

    DSDU data signal parade unit

    DSF parade system function

    DSP data link service provider

    DSP departure sequencing program

    DSP digital signal processor

    DSP parade select panel

    DSP domain specific part

    DSPDRV parade driver

    DSR parade system replacement

    DSS conclusion advocate services

    DST conclusion advocate tool

    DSU data signaling unit

    DT&E evolution test and evaluation

    DTD data terminal display

    DTD document nature definition

    DTE data terminal equipment

    DTED digital terrain evaluation data

    DTG distance-to-go

    DTM demonstration test milestone

    DTMF dual tone multifrequency (telephone)

    DTP distributed targeting processor

    DTPDU data protocol data unit

    DTRS data transceiver router server

    DTS digital theater systems

    DTU data transfer unit

    DU parade unit

    DUAT direct user access terminal

    DUATS direct user access terminal system

    DUST dual-use science and technology

    DVF demonstration and validation facility

    DVM digital voltmeter

    DVMC digital video map computer

    DVOR Doppler VHF omnidirectional ambit DVRS digital voice recorder system

    DWAN direct wide area network


    E-PIREPS electronic pilot reports

    E/D end-of-descent

    E/O engine-out

    E&E electronics and equipment

    EA electronic attack

    EA enterprise architecture

    EA environmental assessment

    EAA Experimental Aircraft Association

    EACARS enhanced ACARS

    EAD engine alert display

    EAD European AIS database (Eurocontrol)

    EADI electronic attitude director indicator

    EADS European Aeronautic Defence and Space Co.

    EAFR enhanced airborne flight recorder

    EAI engine anti-ice

    EAL evaluation assurance level

    EAL-7 evaluation assurance level-7

    EANPG European Air Navigation Planning Group

    EAP engine alert processor

    EAROM electrically alterable read-only memory

    EARTS en route automated radar tracking system

    EAS equivalent airspeed

    EASA European Aviation Safety Agency

    EASIE enhanced ATM and Mode S implementation in Europe

    EATCHIP European air traffic control har­monization & integration program

    EATMS European ATM System (Eurocontrol)

    EATRADA European ATM Research and evolution Association

    EBR extended bit rate

    EC European Commission

    ECAC European Civil Aviation Conference

    ECAM electronic caution alert module

    ECC oversight correcting code

    ECEF earth-centered, earth-fixed

    ECJ European Court of Justice

    ECL emitter coupler logic

    eCM rig conditioning monitoring

    ECMP electronic component manage­ment system

    ECN engineering change notice

    ECO engineering change order

    ECP EICAS control panel

    ECP engineering change proposal

    ECS engineering compiler system

    ECS environmental control system

    ECS event criterion subfield

    ECSL left environmental control system card

    ECSMC environmental control system

    miscellaneous card

    ECSR perquisite environmental control system card

    ECU electronic control unit

    ED EICAS display

    EDA electronic design automation

    EDAC oversight detection and correction

    EDARC enhanced direct access radar channel

    EDC oversight detection and correction

    EDDS electronic document distribution service

    EDI electronic data interchange

    EDI engine data interface

    EDIF engine data interface function

    EDIS emergency digital information service

    EDIU engine data interface unit

    EDMS electronic data management system

    EDP electronic data processing

    EDP engineering evolution pallet

    EDP engine driven pump

    EDS embedded diagnostic system

    EDS explosive detection system

    EDU electronic parade unit

    EE electrical engineer

    EE electronics equipment

    EEAS enhanced en-route automation system

    EEC electronic engine control

    EEC Eurocontrol Experimental Center

    EEPROM electrical erasable programmable ROM

    EEU electrical load management system electronics unit

    EFB electronic flight bag

    EFC expected further clearance

    EFD electronic flight display

    EFDP European flight data processing (Eurocontrol)

    EFIC electronic flight instrument controller

    EFIP electronic flight instrument processor

    EFIS electronic flight instrument system

    EFIS CP EFIS control panel

    EFVS enhanced flight vision system

    EGI embedded GPS/INS

    EGIHO expedited ground-initiated handoff

    EGNOS European Geostationary Overlay System

    EGP exterior gateway protocol

    EGPWS enhanced ground proximity warning system

    EGT exhaust gas temperature

    EHF extremely tall frequency

    EHSI electronic horizontal situation indicator

    EHV electro-hydraulic valve

    EIA Electrical Institute of America

    EIA Electronic Industries Association

    EICAS engine indication and crew alert system

    EICASC EICAS controls

    EIPI extended initial protocol identifier

    EIRP earth incident radiated power

    EIRP efficient isotropic radiation power

    EIS electronic instrument system

    EIS engine indication system

    EIS environmental repercussion statement

    EISA extended industry benchmark architecture

    EIU electronic interface unit

    ELB electronic logbook

    ELEC electrical

    ELM extended length message

    ELMS electrical load management system

    eLORAN enhanced long ambit aid to navigation

    ELOS equivalent even of safety (U.S. Army)

    ELS electronic library system

    ELT emergency locator transmitter

    EM electromagnetic

    EM factor manager

    EMATS endurance management air traffic system

    EMC electromagnetic compatibility

    EMC entertainment multiplexer controller

    EMD engineering, manufacturing and development

    EMER emergency

    EMI electromagnetic interference

    EMP electro magnetic pulse

    EMS emergency medical services

    EMS engine management system

    EMS environmental management system

    EMU expansion module unit

    ENG engine

    ENOC engineering network operations center

    EO/IR electro-optic/infrared

    EOC emergency operations seat (U.S. Army)

    EOD intermission of day

    EO DAS electro-optical distributed aper­ture system

    EOLA European pre-operational data link applications

    EOM intermission of message

    EOT intermission of text

    EOTS electro-optical targeting system

    EP engineering project

    EP external power

    EPC engineering project contractor

    EPCS engine propulsion control system

    EPLD electronically programmable logic device

    EPLRS enhanced position location and reporting system

    EPR engine pressure ratio

    EPR environmental protection requirements (Europe)

    EPROM erasable programmable ROM

    EPS electrical power system

    EPU estimated position uncertainty

    EPV end-point voltage

    EQTG electronic qualification test guide

    ERA Environmentally liable Aviation program (AIA)

    ERAM En Route Automation Moderniza­tion

    ERAST environment research aircraft and sensor technology

    ERB Engineering Review Board

    ERD intermission routing domain

    ERMP extended ambit multi purpose

    EROPS extended ambit operations

    ERP efficient radiation power

    ERP eye reference point

    ERPDU oversight protocol data unit

    ERP PDU reverberate replay protocol data unit

    ERQ PDU reverberate request protocol data unit

    ERU engine replay unit

    ES intermission system

    ES extended squitter

    ESA European Space Agency

    ESAI electronic standby attitude indicator

    ESAS electronic situation awareness system

    ESAS enhanced situational awareness system

    ESD electrostatic discharge

    ESDS electrostatic discharge and soldering

    ESH intermission system hello

    ESID engine and system indication display

    ESIS electronic standby instrument system

    ESIS engine and system indication system

    ESM electronic advocate measures

    ESOIC enhanced small-outline IC

    ESR equivalent-series resistance

    ESS electronic switching system

    ESS environmental stress screening

    ESSD electrostatic sensitive devices

    ESU environmental sensor unit

    ETA estimated time of arrival

    ETAS enhanced TRACON/tower auto­mation system

    ETB intermission of screen (ASCII/IA5 character)

    ETB engineering test bed

    ETC estimated time of completion

    ETD estimated time of departure

    ETE estimated time enroute

    ETI elapsed time indicator

    ETM elapsed time measurement

    ETM electronic training manuals

    ETMS engine-trend monitoring services

    ETMS enhanced traffic management system

    ETNO European Telecommunications Network Operators

    ETOPS extended operations

    ETOPS extended twin-engine operations

    ETP equal time point (halfway there, by time)

    ETRC expected taxi ramp clearances

    ETS Emission Trading Scheme

    ETVS enhanced terminal voice switch

    ETX intermission of transmission

    EU electronic unit

    EU European Union

    EUAFS enhanced upper air forecast system

    EUPS external uninterruptible power supply

    EURATN European ATN

    EURET European research on transport systems

    EUROCAE European Organization for Civil Aviation rig (European equivalent of RTCA)

    EUROCONTROL European Organization for the Safety of Air Navigation

    EV earned value

    EVM oversight vector magnitude

    EVS enhanced vision system

    EW electronic warfare

    EWIS electrical wiring interconnection system

    EZAP enhanced zonal analysis procedures


    F Fahrenheit

    F/O first officer

    F&E facilities and equipment

    FA final approach

    FAA Federal Aviation Administration (U.S.)

    FAA/EURO FAA/Eurocontrol R&D committee

    FAATC FAA Technical Center

    FAB functional airspace blocks

    FAB-T family of advanced beyond-line-of-sight terminals

    FAC Federal Advisory Committee

    FAC final approach course

    FAC flight augmentation computer

    FACT future airport capability task

    FADEC replete authority digital engine/elec­tronic control

    FAF final approach fix

    FAI first article inspection

    FAMIS replete aircraft management/inertial system

    FANS Future Air Navigation System (ICAO)

    FAR federal acquisition regulation

    FAR federal aviation regulation

    FAROA Final Approach Runway Occupancy Awareness

    FAS final approach segment

    FAST final approach spacing tool

    FAT factory acceptance test

    FBCB2 favor XXI Battle Command Bri­gade and Below

    FBL glide by light

    FBN glide by night

    FBO fixed-base operator

    FBW glide by wire

    FC functional capability

    FC foot candles

    FC-AV Fibre Channel-Audio Video

    FCA functional configuration audit

    FCC Federal Communications Com­mission (U.S.)

    FCC flight control computer

    FCDC flight faultfinding direct current

    FCL flight crew licensing (EASA)

    FCM future concepts for maintenance

    FCMA FANS Central Monitoring Agency

    FCP flight control panel

    FCP flight control processor

    FCS flight control system

    FCS frame check sequence

    FCS Future Combat Systems

    FCS future concepts for simulators

    FD failing detection

    FD flight dynamics/director

    FD final data

    FDAF flight data acquisition function

    FDAU flight data acquisitions unit

    FDB flight map data bank

    FDDI fiber distribution data interface

    FDE failing detection and exclusion

    FDEP flight data entry panel

    FDH flight deck handset

    FDI failing detection and isolation

    FDIMU flight data interface management unit

    FDIO flight data input/output

    FDM flight data monitoring

    FDM frequency division multiplex

    FDMA frequency division multiple access

    FDMS flight deck merging and spacing

    FDPS flight data processing system

    FDR flight data recorder

    FDRS flight data recorder system

    FDP flight data processor

    FEATS Future European Air Traffic System

    FEC forward oversight correction

    FEP front-end processor

    FERNS Far East Radio Navigation Service

    FF fuel flow

    FFS replete flight simulator

    FFT replete flight trainer

    FGC flight guidance computer

    FGS flight guidance system

    FHA functional hazard assessment

    FIAO flight inspection area office

    FIB forwarding information base

    FIFO first in, first out

    FIM failing isolation manual

    FIR flight information region

    FIS flight information services

    FIS-B FIS-broadcast

    FIX position in space usually on aircraft’s flight plan

    FL flight level

    FL foot lampert

    FLCH flight even change

    FLEX flexibility in the terminal environment

    FLIR forward-looking infrared

    FLTCK flight check

    FltWinds flight and weather information and conclusion support

    FLW forward-looking windshear radar

    FM frequency modulation

    FMA flight mode annunciator

    FMAC Frequency Management Advisory Council

    FMC flight management control/computer

    FMC realm programmable gate array mezzanine card

    FMC future concepts for maintenance

    FMCDU flight management control and parade unit

    FMCF flight management computer function

    FMCS flight management computer system

    FMCW frequency-modulated continuous wave

    FMEA failure mode and effects analysis

    FMF flight management function

    FMGC flight management guidance computer

    FMGEC flight management guidance envelope computer

    FMP flight mode panel

    FMS flight management system

    FMS replete mission simulator

    FMS-ATM Flight Management System-Air Traffic


    FMSG Frequency Management Study Group (ICAO)

    FMST flight management system trainer

    FMU fuel metering unit

    FMV replete motion video

    FNPRM further notice of proposed rulemaking

    FOC flight operations center

    FOC replete operational capability

    FOC fuel/oil cooler

    FOD exotic expostulate debris

    FODA flight operations data assurance

    FOG fiber optic gyro

    FONSI finding no significant (environmental) impact

    FOQA flight operational trait assurance

    FOS fiber optics subcommittee (AEEC)

    FOSA flight operator surface application

    FOV realm of view

    FOWG Fiber Optics Working Group (Naval Air Systems Command)

    FPA flight path angle

    FPA focal plane array

    FPAC flight path acceleration

    FPC flight profile comparator

    FPGA realm programmable gate array

    FPM feet per minute

    FPV flight path vector

    FQIS fuel trait indicating system

    FQPU fuel trait processor unit

    FQR formal qualification review

    FR frame relay

    FRA flap retraction altitude

    FRAD frame relay access device

    FRCS flight recorder configuration standard

    FRED flight recorder electronic documentation

    FRM failing reporting manual

    FRM flammability reduction means

    FRM frame reject mode

    FRMR frame reject

    FRP Federal Radionavigation map (U.S.)

    FRPA fixed reception pattern antenna

    FRQ frequency

    FSAS flight service automation system

    FSDO Flight Standards District Office (FAA)

    FSE FANS systems engineering

    FSE realm service engineer

    FSEMC Flight Simulator Engineering and Maintenance Conference

    FSEU flap slat electronics unit

    FSF Flight Safety Foundation

    FSM flight schedule monitoring

    FSR realm service representative

    FSS flight service station

    FSWE FANS software engineering

    FT functional test

    FT/ADIRS failing tolerant/air data inertial reference system

    FTE flight technical error

    FTK freight tonne kilometers

    FTP file transfer protocol

    FTPP failing tolerant power panel

    FTS Federal Telecommunications System

    FUE first unit equipped (U.S. Army)

    FUSE family of unmanned systems experiments (U.S. Army)

    FVHF future VHF system study (Eurocontrol)

    FW failure warning

    FWC flight warning computer

    FWD forward

    FWS flight warning system


    G/A ground/air or ground-to-air

    G/G ground/ground

    G/S glide slope

    GA general aviation

    GA go-around

    GAAS gallium arsenide

    GACS genetic ATN communications service

    GAGAN geostationary augmentation network

    GAIN galley inserts

    GAIT ground-based augmentation and integrity technique

    GAMA general Aviation Manufacturers Association

    GAN global area network

    GAO Government Accountability Office (U.S.)

    GATM global air traffic management

    GAViS general aviation vision system

    GBAS ground-based augmentation system

    GBSAA ground-based sense and avoid

    GBST ground-based software tool

    GBT ground-based transceiver

    Gbyte gigabyte (billion bytes)

    GCA ground-controlled approach

    GCAS ground jolt avoidance system

    GCB generator circuit breaker

    GCC ground cluster controller (ACARS)

    GCP glare-shield control panel

    GCS ground clutter suppression

    GCS ground control station

    GCU generator control unit

    GDLP ground data link processor

    GDOP geometric dilution of precision

    GDP ground detain program

    GENOT general notice

    GEO geosynchronous/geostationary earth orbit

    GEP ground entry point

    GES ground earth station

    GFE government furnished equipment

    GFI general format identifier

    GFLOPS gigaflops

    GFSK Gaussian frequency shift keying

    GG graphics generator

    GGR G/G router

    GGS GPS ground station

    GGTFM ground-ground traffic flow man­agement

    GH ground handling

    GHG greenhouse gas

    GHz gigahertz

    GI group identifier

    GIB global navigation satellite system integrity broadcast

    GIC global navigation satellite system integrity channel

    GIC GPS integrity channel

    GIG Global Information Grid

    GIG-BE GIG-Band Expansion

    GICB ground-initiated comm-B

    GIHO ground initiated handoff

    GINS GPS-inertial navigation systems

    GIOVE-A Galileo In-Orbit Validation Experiment-A

    GIP government-industry partnership

    GIS geodetic information system

    GIS geographic information system

    GIS graphical information system

    GIVE grid inospheric plumb error

    GJU Galileo joint undertaking

    GL ground location (ACARS/AFEPS)

    GL group length

    GLC geographic locator codes

    GLNS GPS landing and navigation system

    GLONASS Global Navigation Satellite System (Russia)

    GLS GNSS landing system

    GLS GPS landing system

    GLU GPS landing unit

    GM guidance material

    GMC ground movement control

    GMDS ground mobile data service

    GMR giant magnetoresistive

    GMT Greenwich connote time

    GMTI ground moving target indicator

    GMU GPS monitoring unit

    GNA global network architecture

    GNE ribald navigational error

    GNR global navigation receiver

    GNSS global navigation satellite system


    GoMATS Gulf of Mexico advanced traffic surveillance

    GOMEX Gulf of Mexico

    GOPS giga operations

    GOS grade of service

    GOSIP government open systems interconnection profile

    GP general purpose

    GPADIRS global positioning, air data, inertial reference system

    GPCBT guidelines for the production of computer-based training (Eurocontrol)

    GP&C global positioning and communications

    GPIB general purpose instrument bus

    GPIRS global positioning/inertial reference system

    GPP general purpose processor

    GPPU general-purpose processing unit

    GPRS general packet radio services

    GPS Global Positioning System

    GPSSU GPS sensor unit

    GPU ground power unit

    GPWC ground proximity warning computer

    GPWS ground proximity warning system

    GR ground router

    GRAS ground-based regional augmentation system

    GRIP gridded binary (National Weather Service model output)

    GRP geographic reference point

    GS ground speed/station

    GSC ground station controller (ACARS)

    GSE ground advocate equipment

    GSIF ground station information frame

    GSM global systems mobile

    GSMS ground station management system

    GSP glare shield panel

    GTC ground terminal computer

    GUI graphical user interface

    GVA geometric plumb accuracy

    GVE graphics vector engine

    GW gateway

    GWDS realistic weather parade system

    GWS graphical weather services


    HAA high-altitude airship

    HAATA Houston area Airspace Transition System

    HAD hardware architecture document

    HADDS Host Air Traffic Management Data Distribution System

    HADS high-altitude platform station

    HAE height above ellipsoid

    HAG height above geoid

    HAI Helicopter Association International

    HALE high-altitude, long-endurance

    HARS tall altitude route system

    HART heterogeneous airborne reconnaissance teams (U.S. Army)

    HAT height above touchdown zone

    HCI human-computer interface

    HCP heads-up control panel

    HCS host computer system

    HD tall density airports

    HD tall definition

    HDD head-down display

    HDG heading

    HDG SEL heading select

    HDL hybrid data link

    HDLC high-level data link control

    HDLC-B HDLC-balanced

    HDLMS hybrid data link management system

    HDMI high-definition multimedia interface

    HDOP horizontal dilution of precision

    HDP hardware evolution plan

    HE altitude error

    HEA head rig assembly

    HEMS helicopter emergency medical services

    HERF high-energy radio frequency (or energy radiated fields: dense)

    HF tall frequency

    HF human factors

    HFACS human factors analysis and classification system

    HFDL high-frequency data link

    HFDM high-frequency data modem

    HFDR tall frequency data radio

    HFI human factors integration

    HFNPDU tall frequency network protocol data unit

    HFOM horizontal figure of merit

    HFS tall frequency system

    HFSG human factor study group

    HFSNL tall frequency subnetwork layer

    HFWG human factors working group

    HGA tall gain antenna

    HGAS HGA system

    HGC head-up guidance computer

    HGS head-up guidance system

    HGS HFDL ground station

    HHLD heading hold

    HID host interface display

    HIL horizontal integrity limit

    HIRF high-intensity radiated field

    HITL human in the loop

    HITS highway in the sky

    HLCS tall rear control system

    HLE higher layer entity

    HLL tall even language

    HMD helmet-mounted display

    HMI hazardously delusory information

    HMI human-machine interface

    HMOS high-density metal oxide semiconductor

    HMS handheld manpack and minuscule contour fit

    HMSD Helmet Mounted Sight & Display

    HMU height monitoring unit

    HO handoff

    HOCSR host/oceanic computer system replacement

    HOTAS hands on throttle and stick

    HOW hand-over word

    HP tall pressure

    HP holding pattern

    hPa hecto Pascal

    HPA tall power amplifier

    HPC tall pressure compressor

    HPL horizontal protection limit

    HPR tall power relay

    HPSOV tall pressure shutoff valve

    HPT tall pressure turbine

    HRD home routing domain

    HS-DSAD tall accelerate digital service access device

    HSD high-speed data

    HSI horizontal situation indicator

    HSIT hardware and software integration test

    HSL heading select

    HSR tall stability reference

    HSRP flaming standby routing protocol

    HTC highest two-way channel

    HUD head-up display

    HUL horizontal dubiety level

    HUMINT human intelligence

    HUMS health and usage monitoring system

    HVPS tall voltage power supply

    HVT high-value target

    HWCI hardware configuration item

    HX heat exchanger

    HYD hydraulic

    HYDIM HYD interface module

    Hz Hertz (cycles per second)


    I/O input/output

    I&TE integration and test engineering

    IA interoperability assessment

    IAA incident awareness and assessment

    IACSP international aeronautical com­munications service provider

    IAC integrated avionics computer

    IAGS integrated ARINC ground station

    IANA Internet assigned number authority

    IAOA indicated angle of attack

    IAOPA International Council of Aircraft Owners and Pilots Association

    IAPA instrument approach procedures automation

    IAPS integrated avionics processing system

    IARP inverse address resolution protocol

    IAS indicated airspeed

    IAT investment analysis team

    IATA International Air Transport Association

    IBAC International commerce Aviation Council

    IC integrated circuit

    IC intercabinet

    ICAO International Civil Aviation Organization

    ICAO IFPP ICAO Instrument Flight Procedures Panel

    ICAO OCP ICAO hindrance Clearance Panel

    ICARD ICAO five-letter denomination code & route designator


    ICAP improved capability

    ICAW Instructions for Continued Airworthiness (FAA)

    ICC IAPS card cage

    ICCAIA International Coordinating Council of Aerospace Industries Association

    ICD interactive design center

    ICD interface control document/drawing

    ICD installation control drawing

    ICM interline communications manual

    ICMP Internet control message protocol

    ICNIA integrated communications, navi­gation and identification avionics

    ICP integrated core processor

    ICS intercommunications system

    ICS interface control specification

    ICSS integrated communication switching system

    ICU instrument comparator unit

    ICU integrated control unit

    ID identifier/identification

    IDC indicator display/control

    IDC internal diagnostic capabilities

    IDD interface design document

    IDEN integrated digital enhanced network

    IDG integrated drive generator

    IDI initial domain identifier

    IDIQ indefinite-delivery/indefinite quantity

    IDM Improved Data Modem

    iDMU integrated data management unit

    IDP initial domain part

    IDRP interdomain routing protocol

    IDS ice detection system

    IDS inter-domain system

    IDS integrated parade system

    IDU interactive parade unit

    IEC IAPS environmental control module

    IEC International Electrotechnical Commission

    IEC International Engineering Consortium

    IED improvised explosive device

    IED insertion extraction device

    IEEE Institute of Electrical and Electronics Engineers

    IF intermediate frequency

    IFALPA International Federation of Airline Pilots Associations

    IFASS integrated system for surveillance and radio transmission

    IFATCA International Federation of Air Traffic Controllers Associations

    IFC indicated final cost

    IFDL intraflight data link

    IFE&C in-flight entertainment and connectivity

    IFE in-flight entertainment

    IFF identification, friend or foe

    IFIS integrated flight information system

    IFPS integrated initial flight map processing system

    IFR instrument flight rules

    IFRB International Frequency Registration Board

    IGES initial realistic exchange specification

    IGES intermediate ground earth station

    IGIA Interagency Group on International Aviation

    IGV inlet steer vane

    IHAS integrated hazard avoidance system

    ILA International Law Association

    ILM independent landing monitor

    ILS instrument landing system

    ILSP integrated logistics advocate plan

    IMA integrated modular avionics

    IMC instrument meteorological conditions

    IMG implementation manager group

    IMU inertial measurement unit

    INFO information frame

    INAV interactive navigation

    inHg inches of mercury

    INMARSAT International Maritime Satellite Organization

    INMS integrated network management system

    INS inertial navigation system

    INTELSAT International Telecommunications Satellite Organization

    InterNIC Internet Network Information Center

    Interop interoperability

    IO information operations (U.S. Army)

    IOC initial operating capability

    ION Institute of Navigation

    IOR Indian Ocean region

    IOS Internet operating system

    IOT&E initial operational test and evaluation

    IP intellectual property

    IP Internet protocol

    IPACG Informal Pacific ATC Coordination Group

    IPC intermediate pressure compressor

    IPC interprocess communication

    IPD industrial products division

    IPI initial protocol identifier

    IPT integrated product team

    IPR Internet protocol router

    IPT integrated product team

    IPT integrated project team

    IPT intermediate pressure turbine

    IR infrared

    IRAC Interdepartmental Radio Advisory Committee

    IR&D investment research and development

    IRIG-B inter-range instrumentation group-time code format B

    IRIS Iris Recognition Immigration System

    IRP integrated refuel panel

    IRR internal rate of return

    IRS inertial reference system

    IRS interface requirements specification

    IRU inertial reference unit

    IS intermediate system

    ISA industry benchmark architecture

    ISA Instrument Society of America

    ISC integrated systems controller

    ISDN integrated services digital network

    ISDOS information system design and optimization system

    ISDU inertial system parade unit

    ISH intermediate system hello

    ISIS integrated sensor is structure

    ISLN isolation

    ISMS in-flight safety monitoring system

    ISO International Standards Organization

    ISO PA ISO protocol architecture

    ISP integrated switching panel

    ISP internet service provider

    ISR intelligence, surveillance and reconnaissance

    ISR interrupt service routine

    ISS integrated surveillance system

    ISSN intermediate system sub-network

    ISSS initial sector suite system/sub­system

    ISU initial signal unit

    ITAR International Traffic in Arms Regulations

    ITC in-trail climb

    ITD in-trail descent

    ITP in-trail procedures

    ITS integrated test system

    ITSE integrated test and advocate environment

    ITU International Telecommunications Union

    ITWS integrated terminal weather system

    IUPS internal uninterruptible power supply

    IV isolation valve

    IVSI instantaneous plumb accelerate indicator


    J-UCAS joint unmanned combat air systems

    J/S jammer-to-signal ratio

    JAA Joint Aviation Authorities

    JCA joint capabilities area

    JCA Joint Cargo Aircraft

    JAR joint airworthiness requirement

    JAR-OPS Joint Aviation Regulations Opera­tions

    JAR-AWO JAR-all weather operations

    JATO jet assisted takeoff

    JCAB Japanese Civil Aviation Bureau

    JCAT Joint Combat Assessment Team

    JFET junction realm sequel transistor

    JFEX Joint Expeditionary favor Experiment

    JFX Joint Forces Exercise

    JHMCS joint helmet-mounted cueing systems

    JIIM joint, interagency, intergovernmental and multinational (U.S. Army)

    JIM Joint, Interagency and Multinational

    JIPT joint integrated product team

    JPALS Joint Precision Approach and Landing System

    JPDO Joint Planning and evolution Office (U.S.)

    JPEO Joint Program Executive Office

    JPL Jet Propulsion Laboratory

    JPO Joint Planning Office

    JPS journal processing system

    JRANS Japanese regional air navigation system

    JRC Joint Resource Council

    JSTeF JTRS Science and Technology Forum

    JSAT joint system acceptance test

    JSF Joint Strike Fighter

    JTAG Joint Test Action Group

    JTIDS joint tactical information distribu­tion system

    JTRS joint tactical radio system

    JUAS COE Joint Unmanned Aircraft System seat of Excellence (U.S. Army)

    JV joint venture

    JVMF joint variable message format


    kA kiloamperes

    KARI Korea Aerospace Research Insti­tute

    KB kilobytes (thousand bytes)

    KBITS kilobits

    Kbps kilobits per second

    Kgls kinematic GPS landing system

    KHz kilohertz (1000 cycles per second)

    KIAS knots indicated airspeed

    KPS KB per second

    KT knot

    KTS knots

    KVA kilovolt-ampere

    KW kilowatt


    L1 L-band carrier (1575.42 MHz)

    L2 L-band carrier (1227.6 MHz)

    LAAS local area augmentation system

    LACAC Latin American Civil Aviation Commission

    LADAR laser radar

    LADGPS local area differential GPS

    LAGPS local area global positioning system

    LAHSO land and hold short operation

    LAIRCM big aircraft infrared countermeasures

    LAM levels of avionics maintenance

    LAN local area network

    LAPB link access protocol, balanced

    LASER light amplification by simulated emission of radiation

    LAT latitude

    LBA Luftfahrt-Bundesamt (German equivalent of FAA)

    LCA layered component architecture

    LCC leadless chip carrier

    LCC life cycle cost

    LCC low-cost carrier

    LCD liquid crystal display

    LCF link control field

    LCI analytic channel identifier

    LCM life cycle management

    LCN local communications network

    LCP lighting control panel

    LCR link connection refusal

    LDA landing directional aid

    LDA laterally displaced approach

    LDCC leaded chip carrier

    LDCS local departure control system

    LDGPS local area differential global posi­tioning satellite

    LDOC long distance operational control

    LDRCL low density radio-communica­tions link

    LDU lamp driver unit

    LE link establish

    LED light-emitting diode

    LEO low earth orbiting

    LF low frequency

    LFE lead-free electronics

    LFR LF radio range

    LGA low gain antenna

    LHP lighting HIRF protection

    LIDAR light detection and ranging

    LINCS long-haul/leased interfacility national airspace communica­tions system

    LISN line impedance stabilization network

    LLC analytic link control

    LLWAS low-level wind shear alert system

    LME link management entity

    LMI analytic management interface

    LMM locator middle marker

    LMT local connote time

    LNA low-noise amplifier

    LNAV lateral navigation

    LOA letters of agreement

    LOB left outboard

    LOC localizer/location

    LODA epistle of design approval (FAA)

    LOI even of interoperability

    LOM locator outer marker

    LON longitude

    LOPA layout of passenger accommodations

    LORAN long-range air navigation

    LOS line of sight

    LP localizer performance

    LPB loss prevention bulletin

    LPC low pressure compressor

    LPDU link protocol data unit

    LPT low pressure turbine

    LPV localizer performance with plumb guidance

    LRC long-range cruise

    LRF/D laser ambit finder/designator

    LRIP low rate initial production

    LRM line replaceable module

    LRR long-range radar

    LRU line replaceable unit

    LSA light sport aircraft

    LSAS longitudinal stability augmentation system

    LSAT life advocate for trauma and transport (U.S. Army)

    LSB least significant bit

    LSB lower sideband

    LSD least significant digit

    LS-DSAD low accelerate frame relay service access device

    LS-FRAD low accelerate frame relay access device

    LSI big scale integration

    LSK line select key

    LSN local subnetwork

    LSP link status protocol data unit

    LSS lightening sensor system

    LTA lighter-than-air

    LTD laser target designator

    LTC lowest two-way channel

    LV lower sideband voice

    LVC low visibility conditions

    LVL level

    LVDT linear voltage differential transducer

    LVP low visibility procedure

    LVPS low voltage power supply

    LVT low volume terminal

    LZ landing zone


    M mach number

    M2K Mobility 2000 (U.S. Air Force)

    M-SNDCF mobile-subnetwork conditional convergence function

    M-TADS Modernized Target Acquisition and Designation Sight

    M/ASI mach/airspeed indicator

    M/S meters per second

    M&S merging & spacing

    MA message assurance

    MAA maximum authorized IFR altitude

    MAB Military ATM Board (Europe)

    MAC medium access controller

    MACC military area control center

    MACS multiple access communication system

    MADARS malfunction detection, analysis and recording system

    MAGIC manager of air-ground interface communications

    MAHWP missed approach holding waypoint

    MALDT connote administrative and logistics detain time

    MALE medium-altitude, long-endurance

    MALSR Medium-Intensity Approach Lighting System with Runway Alignment Indicator

    MAN metropolitan area network

    MANPADS man portable air defense system

    MAP missed alert parameter

    MAP missed approach

    MAP missed approach procedure

    MAP monitor alert parameter

    MAPt missed approach point

    MAR mobile access router

    MARSA military assumes responsibility for separation

    MASPS minimum aviation system perfor­mance standard

    MAST multiaircraft simulation terminal

    MAT maintenance access terminal

    MAV micro air vehicle

    MAWP missed approached waypoint

    MAX maximum

    mb millibars

    MB marker beacon

    MBE multiple bit error

    MBER minimum bit oversight rate

    MBPS megabytes per second

    MC master change

    MCA minimum crossing altitude

    MCAP Manned/Unmanned Common Architecture Processor

    MCB microwave circuit board

    MCC maintenance control computer

    MCDP maintenance control parade panel

    MCDU multifunctional control parade unit

    MCI mode C intruder

    MCN manufacturing control number

    MCOS multi-computing operating system

    MCP maintenance control panel

    MCP mode control panel

    MCT max continuous thrust

    MCU modular concept unit

    MCU multifunction concept unit

    MDA minimum descent altitude

    MDA Missile Defense Agency (U.S.)

    MDAH minimum descent altitude/height

    MDAU maintenance data acquisition unit

    MDC maintenance diagnostic computer

    MDCRS Meteorological Data Collection and Reporting Service

    MDD mission data debrief

    MDH minimum decent height

    MDL multipurpose data link

    MDMP military conclusion making process (U.S. Army)

    MDR mode digital radio

    MDS minimum discernible signal

    MDT maintenance parade terminal

    MDT connote downtime

    MEA minimum en route altitude

    MEARTS Microprocessor En Route Automation Radar Tracking System

    MEC main rig center

    MEL minimum rig list

    MEO medium earth orbit

    MEOT multiple-expert view team

    MES main engine start

    MET meteorology

    METAR meteorological aviation routine weather report

    METL mission essential job list (U.S. Army)

    METOC meteorological and oceanographic condition

    MF medium frequency

    MFCP multifunction control parade panel

    MFD multifunction display

    MFDS multifunction parade system

    MFDU multifunction parade unit

    MFDUA heterogeneous flight data acquisi­tion unit

    MFIT connote failing isolation time

    MFM maintenance failing memory

    MGSCU main gear steering control unit

    MGR manager

    MHD magnetic difficult drive

    MHD multi-hazard display

    MHRS magnetic heading reference system

    MHS message handling service

    MHz megahertz

    MIB management information base

    MIC microphone

    MicroEARTS Micro Enroute Automated Radar

    Tracking System

    MIDS multifunction information distri­bution system

    MIDS-J Multifunctional Information Distri­bution System-JTRS

    MIDS-LVT Multifunctional Information Distribution System Low Volume Terminal

    MIDU multi-purpose interactive parade unit

    MILS multiple independent levels of security

    MILSPEC military specification

    MIL-STD military standard

    MIMO multi-input/multi-output

    MIN minimum/minute

    MIPS management interface protocol specification

    MIPS million instructions per second

    MKR marker

    MLA maneuver limited altitude

    MLM mid-level management

    MLS microwave landing system

    MLW maximum landing weight

    MM mass memory

    MM middle marker (glideslope)

    MMI man-machine interface

    MMIC monolithic microwave integrated circuit

    MMR multimode receiver

    MMS maintenance management system

    MMS metering, merging and spacing

    MMSI miniature munitions system interface

    MMU remembrance management unit

    MMW millimeter wave

    MNCID management network category interaction diagram

    MNPS minimum navigation performance specification

    MNS managed network service

    MO managed object

    MO magneto-optical

    MOA memorandum of agreement

    MOA military operation area

    MOC memorandum of cooperation

    MOCA minimum hindrance clearance altitude

    MOD magneto-optical drive

    MOD modification

    MODEM modulator/demodulator

    MOPR minimum operational perfor­mance requirements

    MOPS minimum operational perfor­mance standards

    MOQA maintenance operations trait assurance

    MORA minimum off-route altitude

    MOS metal oxide semiconductor

    MOS military occupational specialty

    MOSA modular open systems approach

    MOSP multi-mission optronic stabilized payload (U.S. Army)

    MOU memorandum of understanding

    MOV metal oxide varsitor

    MP-CDL Multi-Platform-Common Data Link

    MPAR multipurpose airport radar

    MPEG moving Picture Expert Group

    MPCU multiport protocol converter unit

    MPDS mobile packet data service

    MPEL maximum permissible exposure level

    MPM microwave power module

    MPP materials, processes and parts

    MPS maintenance processor system/subsystem

    MRA minimum reception altitude

    MRO maintenance, repair and overhaul

    MRR manufacturing revision request

    MRT connote repair time

    MRT multi-remote terminal

    Ms millisecond

    MSB most significant bit

    MSC message sequence chart

    MSCP mobile satellite service provider

    MSD mass storage device

    MSG message

    MSI medium scale integration

    MSK minimum shift keying

    MSL connote sea level

    MSP Mode S specific protocol

    MSSR monopulse secondary surveil­lance radar

    MSSS Mode S specific services

    MSU mode select unit

    MT minimum time

    MTA message transfer agent

    MTBF connote time between failure

    MTBO connote time between outages

    MTBR connote time between removal/repairs

    MTBUR connote time between unscheduled removal

    MTBUR connote time between unit replacements

    MTC maintenance terminal cabinet

    MTD maintenance terminal display

    MTF maintenance terminal function

    MTI moving target indicator

    MTM module test and maintenance

    MTMBIU MTM bus interface unit

    MTOW maximum takeoff weight

    MTR military training route

    MTS multi-spectral targeting system

    MTSAT Multifunction Transport Satellite

    MTTDA connote time to dispatch alert

    MTTF connote time to failure

    MTTM connote time to maintenance

    MTTMA connote time to maintenance alert

    MTTR connote time to repair

    MTTRS connote time to restore service

    MTTUR connote time to unscheduled removal

    MU management unit

    MUE modernized user equipment

    MUM manned unmanned teaming

    MUOS Mobile User Objective System

    MUS minimum spend specification

    MUSE multi-user system environment

    MUX multiplexer

    mV millivolts

    MVA minimum vectoring altitude

    MVMC marginal visual meteorological conditions

    MWARA major world air route area

    MWP meteorological weather processor

    MWS missile warning system


    N1 fan speed

    N2 intermediate compressor speed

    N3 high-speed compressor

    N-UCAS Navy-Unmanned Aerial Combat System

    NACp navigation accuracy category for position

    NACv navigation accuracy category for velocity

    NAC NextGen Advisory Committee

    NACA National Advisory Committee for Aeronautics NCAR National seat for Atmospheric Research

    NADIN national airspace data interchange network

    NADIN II NADIN packet switch

    NAILS national airspace integrated logistics support

    NAK negative acknowledgment

    NAPA National Academy of Public Administration

    NAOMS National Aviation Operational Monitoring Service

    NAPRS national airspace performance reporting system

    NAS national aircraft standard

    NAS National Airspace System (FAA)

    NASA National Aeronautics and Space Administration

    NASPALS National Airspace System Preci­sion Approach and Landing Sys­tem (FAA)

    NAT North Atlantic region

    NAT North Atlantic tracks

    NATA National Air Transport Association

    NATCA National Air Traffic Controllers Association (U.S.)

    NATS National Air Traffic Services (U.K.)

    NATS North Atlantic track system

    NAT TFG North Atlantic Traffic Forecasting Group

    NAV navigation

    NAVAID navigational aid

    NAVAIR Naval Air Systems Command

    NAVSAT navigation satellite

    NAVSEA Naval Sea Systems Command

    NBAA National commerce Aviation Association

    NC numerical control

    NC3A NATO Consultation, Command and Control Agency

    NCATT National seat for Aircraft Technician Training

    NCD no computed data

    NCES Net-Centric Enterprise Services

    NCI not currently implemented

    NCO Network Centric Operations

    NCOIC Network Centric Operations Industry Consortium

    NCOW net-centric operations and warfare

    NCP NAS change proposal

    NCS network control system

    NCS network coordination station

    ND navigation display

    NDB navigation database

    NDB nondirectional radio beacon

    NDI nondestructive inspection

    NDI nondevelopmental item

    NE network element

    NEAN North European ADS Network

    NEAP North European CNS/ATM application project

    NEC Network-Enabled Capability

    NED Network Enterprise Domain

    NELS Northwest European Loran System

    NEMA National Electrical Manufacturers Association (U.S.)

    NEO Network Enabled Operations

    NEPA National Environmental Policy Act

    NESACC North, East & Southern area control centers for China

    NESDIS national environmental satellite data and information service

    NET network entity title

    NEXCOM Next Generation Air/Ground Communications System

    NextGen Next Generation Air Transporta­tion System (U.S.)

    NEXRAD next-generation weather radar

    NFF no failing found

    NFS network file server

    NGIP NextGen Implementation Plan

    NGIWG NextGen Implementation map labor Group

    NGIWP NextGen Implementation map labor Plan

    NGJ NextGen Jammer (U.S. Navy)

    NIAC NAS Information Architecture Committee (FAA)

    NIC navigation integrity category

    NIC network interface controller

    NIC newfangled installation concept

    NICE NAT implementation manage­ment group cost effectiveness

    NICE network integrated cabin equipment

    NIEC NextGen Integration and Evaluation Capability

    NIH not invented here

    NIMA National Imagery and Mapping Agency (U.S.)

    NIMS NAS infrastructure management system

    NIR network interface router

    NIRV network interface router VHF datalink

    NIS not in service

    NISC NAS information security coordination

    NIST National Institute of Standards and Technology

    NIU North American ISDN User Forum (NIST)

    NIP network interface processor

    NL network layer

    NLM network loadable module

    NLP network layer protocol

    NLR Netherlands National Aerospace Laboratory

    NM nautical mile

    NM network management

    NMC National Meteorological Center

    NMCCD network management category class diagram

    NMCD network management category diagram

    NMF network management function

    NMIRS network management interface requirements specification

    NML NATO Maturity Levels

    NMP network management plan

    NMS network management system

    NMS navigation management system


    NNEW NextGen Network Enabled Weath­er (FAA)

    NOAA National Oceanic and Atmospheric Administration (U.S.)

    NOC network operations center

    NOC note of change

    NOCAR North Atlantic oceanic concept and requirements

    NOCC National Operational Control Center

    NO COM no communication

    NOI notice of inquiry (FCC)

    NOPAC North Pacific

    NORAD North American Aerospace Defense Command

    NOTAM notice to airmen

    NOTUS notice to users (ARINC)

    NPA non-precision approach

    NPDU network protocol data unit

    NPIAS national map for integrated airport systems

    NPR national performance review

    NPRM notice of proposed rule making

    NPV net present value

    NR network router

    NRA non-radar airspace

    NRD network routing domain

    NRP national route program

    NRS navigation reference system

    NRZ non-return to zero

    NS network service

    NSA National Security Agency (U.S.)

    NSAP network service access point

    NSC network service center

    NSDU network service data unit

    NSEL NSAP selection

    NSEU neutron lone event upset

    NSSL National strict Storms Laboratory (U.S.)

    NTDA NEXRAD Turbulence Detection Algorithm

    NTIA National Telecommunications and Information Administration (U.S.)

    NTF no inconvenience found

    NTSB National Transportation Safety Board (U.S.)

    NTST National Television Systems Committee

    NUC navigation dubiety category

    NUCp navigation dubiety category for position

    NUI network user identification

    NUP NEAN update program

    NVCD night vision cueing and display

    NVIS night vision imaging system

    NVM non-volatile memory

    NVRAM non-volatile RAM

    NVS National Airspace System Voice Switch (FAA)

    NWS National Weather Service (U.S.)

    NWxP NextGen Weather Processor (FAA)


    O-QAR optical quick access recorder

    O&M operations and maintenance

    O&S operating and support

    OAC oceanic area control center

    OAS oceanic automation system

    OASIS operational area satellite information system

    OASIS operational and supportability implementation system

    OASIS organic airborne and surface influence sweep

    OASYS hindrance avoidance system

    OAT operational acceptance test

    OAT outside air temperature

    OATS orbit and attitude tracking system

    OBP operational build plan

    OBS omnibearing selector

    OBS optical bypass switch

    OCA oceanic control area

    OCC occasionally connected computing

    OCC operations control center

    OCD oceanic clearance delivery

    OCIG Oceanic Communications Improvement Group

    OCO overseas contingency operations

    OCP oceanic clearance processor

    OCTAS hindrance cable and terrain avoidance system

    ODA open document architecture

    ODA Organization Designation Authorization

    ODAPS oceanic parade and planning system

    ODIAC operational requirements for ATM air/ground data communications (Eurocontrol)

    ODID operational parade and input development

    ODIN observe, detect, identify, neutralize

    ODL oceanic data link

    ODL optical data link

    OEI one engine inoperative

    OEM original rig manufacturer

    OEP Operational Evolution Partnership (FAA)

    OES Office of Emergency Services

    OEU overhead electronics unit

    OFDM orthogonal frequency division multiplexing

    OFDPS oceanic flight data processing system

    OFP operational flight program

    OGE operational ground equipment

    OHA operational hazard assessment

    OHSC overhead stowage compartments

    OHU overhead unit (HUD)

    OI operational improvement

    OID expostulate identifier

    OIG Office of Inspector general (U.S.)

    OIS operational information systems

    OIT onboard information terminal

    OJT on-the-job training

    OLAN onboard local area network

    OLDI on-line data interchange

    OLED organic LED

    OM outer marker

    OMB Office of Management and Budget (U.S.)

    OMS onboard maintenance system

    OMT expostulate modeling technique

    OMT onboard maintenance terminal

    ONR Office of Naval Research (U.S.)

    OOA object-oriented analysis

    OOD object-oriented design

    OODA observe, orient, resolve and act

    OOOI out/off/on/in

    OPA operational performance assessment

    OPAS overhead panel ARINC 629 system

    OPBC overhead panel bus controller

    OPD Optimized Profile Descent

    OPS operations

    OPS OPS per second

    OPSPECS OPS specifications

    OPU overspeed protection unit

    OPV optionally piloted vehicle

    OR operational requirements

    ORB expostulate request broker

    ORD operational requirements document

    ORD operations readiness demonstration

    OS open service

    OS operating system

    OSA operational safety assessment

    OSCAR Orbiting Satellite Carrying amateur Radio

    OSD Office of the Secretary of Defense (U.S.)

    OSDS oceanic systems evolution support

    OSE open systems environment

    OSED operational service and environment definition

    OSEIC operational service and environment information capture

    OSGCS one system ground control station

    OSI open systems interface/interconnection

    OSIE OSI environment

    OSI-RM OSI-reference model

    OSJTF Open Systems Joint job favor (U.S.)

    OSPF open shortest path first

    OSPGCS one system portable ground control station (U.S. Army)

    OSR order status report

    OSRVT One System Remote Video Terminal

    OTA Office of Technology Assessment (U.S.)

    OTA other transaction agreement

    OT&E operational test and evaluation

    OTFP operational traffic flow planning

    OTH over the horizon

    OTM-4D Oceanic Trajectory Management-4D

    OTP Office of Telecommunications Policy (U.S.)

    OTS off the shelf

    OVHT overheat


    P2FEP preliminary Eurocontrol test of air/ground datalink (PETAL)-II front-end processor

    P3I preplanned product improvements

    P-Code GPS precision code

    P-DME precision DME

    P-RNAV precision area navigation

    P/F poll/final

    P/RST press to reset

    PA passenger address

    PA power amplifier

    PA precision approach

    PABX private automatic arm exchange

    PAC path attenuation compensation

    PACIS passenger address and commu­nication interphone system

    PAD packet assembler-disassembler

    PAL programmable array logic

    PAM pulse amplitude modulation

    PAMRI peripheral adapter module replacement item

    PANS-OPS procedures for air navigation services-aircraft operations

    PANYNJ Port Authority of newfangled York and newfangled Jersey

    PAPD precise and accurate positioning device

    PAPI precision approach path indicator

    PAR precision approach radar

    PARTNER Partnership for Air Transportation pandemonium and Emissions Reduction

    PAT process action team

    PATS portable avionics test solution

    PAU passenger address unit

    PAVES programmable audio video enter­tainment system

    PAWES performance assessment and workload evaluation

    PAX passenger

    PBD site bearing/distance (waypoint)

    PBID post burn-in data

    PBN performance-based navigation

    PBL performance-based logistics

    PBX public/private arm exchange

    PC personal computer

    PC printed circuit

    PCA physical configuration audit

    PCB printed circuit board

    PCC pilot controller communication

    PCD panoramic cockpit display

    PCI peripheral component interface (32-bit local bus)

    PCI protocol control information

    PCM pulse code modulation

    PCMIA Personal Computer remembrance Card Interface Association

    PCO protocol converter unit

    PCU passenger control unit

    PCU personal control unit

    PCU power control unit

    PCU program coordination office

    PD profile descent

    PDB performance data base

    PDC pre-departure clearance

    PDCU panel data concentrator unit

    PDD package design document

    PDDI product definition data interface

    PDF primary parade function

    PDL program design language

    PDM predefined controller text message

    PDM project evolution manager

    PDN public data network

    PDOP position dilution of precision

    PDR preliminary design review

    PDS persistent data storage

    PDS primary parade system

    PDU protocol data unit

    PE precision engagement

    PECT peer entity contact table

    PED portable electronic device

    PEO C3T Army Program Executive Office Command, Control and Commu­nications Tactical

    PER packed encoding rule

    PERT program evaluation and review technique

    PETAL preliminary Eurcontrol test of air/ground data link

    PF pilot flying

    PF power factor

    pFAST passive final approach spacing tool

    PFC passenger facility charge

    PFC primary flight computer

    PFCS primary flight control system

    PFD primary flight display

    PHARE Program for Harmonized ATM Research in Europe (Eurocontrol)

    PHY physical

    PI parameter identifier

    PICMG PCI Industrial Computer Manufac­turers Group

    PIA performance, integrity and availability

    PICS protocol implementation confor­mance statements

    PID parameter identifier

    PID pilot information display

    PID primitive identifier

    PID process ID

    PIM programmable infosec module

    PIP product improvement program

    PIREP pilot report

    PKI public key infrastructure

    PL parameter length

    PLA power lever angle

    PLB personal locator beacon

    PLBT personal locator beacon and voice transceiver

    PM program manager

    PM angle modulation

    PMA parts manufacturer approval

    PMA parts manufacturer authority

    PMA permanent magnet alternator

    PMAT portable maintenance access terminal

    PMC provisional remembrance cover

    PMC PCI mezzanine card

    PMG permanent magnet generator

    PMOS p-type metal oxide semiconductor

    PMP project/program management plan

    PMS performance management system

    PN pseudo noise

    PNCS performance navigation computer system

    PND primary navigation display

    PNF pilot not flying

    PNR point of no return

    PO section of

    POA modest veteran ACARS

    POA position offset applied

    POC point of contact

    POC proof of concept

    POCC project operations control center

    POH pilot’s operating handbook

    POM program objective memorandum

    POP plug-in optronic payload

    POP point of presence

    POR Pacific Ocean region

    POR program of record

    POSIX portable operating system interface

    POTS modest veteran telephone system/service

    PPA production preparation agreement

    PPDU physical layer protocol data unit

    PPI planned position indicator

    PPL processor-to-processor link

    PPM pages per minute

    PPM parts per million

    PPM pulse position modulation

    PPP point-to-point protocol

    PPS packets per second

    PPS precise positioning service

    PPS pulse per second

    PRAIM predictive RAIM

    PRF pulse repetition frequency

    PRI primary rate interface

    PRM precision runway monitor

    PRM-A Precision Runway Monitor-Alter­nate (FAA)

    PROM programmable read-only memory

    PRN pseudo random noise

    PRS public regulated service

    PRSOV pressure regulating and shutoff valve

    PS power supply

    PSA PS assembly

    PSD port sharing device

    PSDN packet switched data network

    PSE packet-switching exchange

    PSEU proximity sensor electronic unit

    PSL projected service life

    PSL/PSA problem statement language

    /problem statement analyzer

    PSM power supply modules

    PSN packet switching network

    PSPL preferred benchmark parts list

    PSR primary surveillance radar

    PSS proximity sensor system

    PSSA preliminary system safety assessment

    PSTN public switched telephone network

    PSU passenger service unit

    PT plane talk

    PTAN precision terrain aided navigation

    PTD performance test domain

    PTI packet nature identifier

    PTM peripheral transition module

    PTR production test requirements

    PTS problem tracking system

    PTSD production test specification document

    PTT thrust to talk

    PTU power transfer unit

    PV parameter value

    PV photovoltaic

    PVC permanent virtual circuit

    PVD map view display

    PVT position, velocity, time

    PWM pulse-width modulation

    PWR power

    PXI PCI extensions for instrumentation


    QA trait assurance

    QAP QA plan

    QAR quick access recorder

    QDR trait defect report

    QDR trait deficiency report

    QEC quadrantral oversight corrector

    QFE Q code, realm height pressure

    QM trait management

    QMP QM plan

    QMS QM system

    QNH sea even pressure

    QNT quint networking technology

    QOP trait operating procedures

    QPL qualified product list

    QRC quick reaction capability

    QRH quick reference handbook

    QOS trait of service

    QP trait procedure

    QT qualification test

    QVL qualified vendor list


    R-CDL Radar Common Data Link

    R/W read/write

    R&D research and development

    R&M reliability and maintainability

    R&PWG Requirements and Planning labor Group (FAA)

    RA radio altitude

    RA resolution advisory

    RA routing area

    RAA Regional Airline Association

    RAAF Royal Australian Air Force

    RAAS runway awareness and advisory system

    RAC-GAT Russian/American Coordinating Group for Air Traffic Control

    RAC runway analysis chart

    RAD rapid application development

    RAE Royal Aircraft Establishment (Farnborough)

    RAeS Royal Aeronautical Society (U.K.)

    RAF requirements analysis folder

    RAF Royal Air favor (U.K.)

    RAI radio altimeter indicator

    RAID redundant arrays of independent disks

    RAIM receiver autonomous integrity monitoring

    RALA request automatic line adapter

    RALT radar altimeter

    RAM-T reliability, availability, maintainability and testability

    RAM random access memory

    RAMICS rapid airborne mine clearance system

    RAMS reliability, availability, maintainability, sustainability

    RAP required automation performance

    RAPT regional airspace procedures team

    RAS route area statistics (IATA)

    RATMP required air traffic management performance

    RBT reference commerce trajectory

    RC radio controlled

    RCAG remote control air-to-ground

    RCAT Reconfigurable Cockpit and Avi­onics Testbed

    RCD radar cable detection

    RCE radio control equipment

    RCF required communications performance

    RCL radio communications link

    RCO remote communications outlet

    RCP radio control panel

    RCR routing and circuit restoral

    RCSU remote control and status unit

    RCU radio control unit

    RCU remote control unit

    RC&W rack connectors and wiring

    RD (taxi) route deviation

    RD routing domain

    RDARA regional domestic air route area

    RDC routing domain confederation

    RDDMI radio digital distance magnetic indicator

    RDF RD format

    RDI radio direction indicator

    RDI RD identifier

    RDP radar data processing

    RDR radar

    RDSS radio determination satellite system

    RDT&E research, development, test and evaluation

    REA radar electronics assembly

    RE&D research, engineering and development

    REDAC Research, Engineering and Devel­opment Advisory Committee (FAA)

    REFT remote unit reference transmitter (FAA)

    REP required environmental performance

    REQ request

    RER residual oversight rate

    RERP Reliability Enhancement and Re-engining Program

    REVS radar-enhanced vision system

    RF radio frequency

    RF radius-to-fix

    RFA Regulatory Flexibility Act (U.S.)

    RFC request for comments

    RFG requirement focus group

    RFI radio frequency interference

    RFI request for information

    RFID radio frequency identification

    RFM rotorcraft flight manual

    RFMS rotorcraft flight manual supplement

    RFO request for offer

    RFP request for proposal

    RFQ request for quote

    RFU radio frequency unit

    RGB red green blue

    RGCSP Review of the general Concept of Separation Panel (ICAO)

    RGL regulatory guidance library

    RGS relay ground station

    RH radio handler

    RHF ridiculously tall frequency

    RHO response on handoff

    RHSM reduced horizontal separation minima

    RI runway incursion

    RIB routing information base

    RIN Royal Institute of Navigation (U.K.)

    RIP routing information protocol

    RISC reduced instruction set computer

    RLE response on link establishment

    RLG ring laser gyro

    RLS dependable link service

    RM regional manager

    RM&A reliability, maintainability and availability

    RMCDE radar message conversion and distribution equipment

    RMI radio magnetic indicator

    RMMS remote maintenance monitoring system

    RMP risk management plan

    RMS risk management system

    RMS root connote square

    RNAV area navigation

    RNP required navigation performance

    RNP AR RNP authorization required

    RNP SAAAR RNP Special Aircrew and Aircraft Authorization Required

    RNR receive not ready

    RO radio operator

    ROA recognized operating agency

    ROC rate of climb

    ROC leisure of operational capability

    ROD rate of descent

    ROI return on investment

    ROIP radio over Internet protocol

    ROM read only memory

    ROM scabrous order of magnitude

    RON remain over night

    ROT runway occupancy time

    RP routing protocol

    RPAT RNP Parallel Approach Transmission

    RPDE rapid preliminary evolution effort

    RPG rocket-propelled grenade

    RPI relative position indicator

    RPK revenue passenger kilometers

    RPM revolutions per minute

    RPOA Recognized Private Operation Agency

    RR receive ready

    RRI router reference implementation

    RSDP dependable sequencing delivery-confirmation protocol

    RSN regional sub-network

    RSP required surveillance performance

    RSSI received signal energy indicator

    RSTA reconnaissance, surveillance, target acquisition

    RT radio telecommunication

    RTA required time of arrival

    RTB rocket-towed barrier

    RTC red time clock

    RTCA formerly Radio Technical Commission for Aeronautics

    RTCM Radio Technical Commission for Maritime Services

    RTD resistance temperature detector

    RTK real-time kinematic

    RTM radio transmission module

    RTO rejected takeoff

    RTOS real time operating system

    RTR remote transmitter receiver site

    RTS request to send

    RTSP required total system performance

    RTTI run-time nature identification

    RTU radio tuning unit

    RU rack unit (1 inch)

    RVFP RNAV visual flight procedures

    RVP required vision performance

    RVR runway visual range

    RVSM reduced plumb separation minimum

    RVT remote video terminal

    RWI reduce weather impact

    RWM R/W memory

    RWP required weather performance

    RWR radar warning receiver

    RWSL runway status lights

    RX receiver

    RZ return to zero


    S0 Segment 0

    S1 Segment 1

    S&A sense-and-avoid

    S&A descry and avoid

    SA selective availability

    SA situational awareness

    SAA special activity airspace

    SAA sense and avoid

    SAAAR special aircraft and aircrew authorization required

    SAASM selective availability/anti-spoofing module

    SAASM/EGI SAASM/embedded GPS inertial system

    SAD software architecture document

    SADT software architecture design team

    SAE Society of Automotive Engineers

    SAFIR systems aid for integration and failing reporting

    SAI system architecture and interfaces

    SAI System Architecture and Inter­faces Subcommittee (AEEC)

    SAM slot allocation management

    SAM South American region

    SAM surface-to-air missile

    SAMM surface area movement management

    SAMPE Society for the Advancement of Materials and Process Equipment

    SAP service access points

    SAR search and rescue

    SAR synthetic aperture radar

    SARPS standards and recommended practices (ICAO)

    SAS stability augmentation system

    SAS station address set

    SASS surveillance analysis advocate system (Eurocontrol)

    SAT static air temperature

    SAT systems and acceptance testing

    SATCOM satellite communications

    SATNAV satellite navigation

    SB service bulletin

    SBAS satellite-based augmentation system

    SBC lone board computer

    SBD schematic screen diagram

    SBD short data burst

    SBS Surveillance and Broadcast Services

    SC special committee (RTCA)

    SCA self-contained approaches

    SCA software communications archi­tecture

    SCAP Security Certification and Accreditation Procedures (U.S. Department of Defense)

    SCAP benchmark computerized airplane performance

    SCAT special category

    SCCI system controller and cockpit indicator

    SCD system category diagram

    SCE super-conducting electronics

    SCPC lone carrier per channel

    SCSI minuscule computer system interface

    SCT Surface Collaborative conclusion Making Team

    SD secure digital

    SDA System Design Assurance

    SDD system/software design document

    SDD system evolution and demon­stration

    SDDN software-defined data network

    SDF software evolution folder

    SDI source destination identifier

    SDL software data loader

    SDLC synchronous data link control

    SDM software evolution methodology

    SDP software evolution plan

    SDR software defined radio

    SDR system design review

    SDRAM synchronous dynamic random access memory

    SDR software-defined radio

    SDU satellite data unit

    SE systems engineering

    SEC aircraft information security

    working group (AEEC)

    SEC software enabled control

    SECAM sequential color with memory

    SEI Software Engineering Institute

    SEL select identifier

    SELCAL selective calling

    SEMP system engineering management plan

    SESAR lone European Sky Air Traffic Management

    Research program (Eurocontrol)

    SETA system engineering and technical assistance SE-Vision synthetic-enhanced vision

    SEWG security working group

    SFAR special federal regulation

    SFDF subsystem failing detection function

    SFE supplier (or seller)-furnished equipment

    SFT software failing tolerance

    SG subgroup

    SI&T software integration and test

    SICAS secondary surveillance radar improvements and jolt avoidance systems


    SID benchmark instrument departure

    SIGINT signals intelligence

    SIGMET significant meteorological information

    SIL source integrity level

    SIL surveillance integrity level

    SINCGARS single-channel ground and airborne radio system

    SIPRNET covert internet protocol route network (U.S. Army)

    SIS signal in space

    SISG Systems Implementation Subgroup (IATA)

    SIT system integration and test

    SITA Societe Internationale de Tele­communications


    SITD system integration test description

    SITP system integration test plan

    SITP/D SITP/description

    SITR system integration test report

    SITS Security Integrated appliance Set

    SIU server interface unit

    SIWG seat integration

    SJU SESAR Joint Undertaking

    SKPP separation kernels in environments

    requiring tall robustness

    SKT station-keeping technology

    SLA service even agreement

    SLC synchronous link control

    SLH system even health

    SLI system even interface

    SLM benchmark length message

    SLoC source lines of code

    SLS satellite landing system

    SLUC system even spend case

    SLV service even verifier

    SM systems management

    SMA surface movement advisor

    SMART benchmark modular avionics repair and test

    SMB serial mezzanine board

    SMC Space and Missile Systems seat (Air Force)

    SMD standardized microcircuit drawing

    SMD surface mount device

    SMDS switch multimegabit data service

    SME system management entity

    SMGCS surface movement guidance and control systems

    SMI benchmark message identifier

    SMR simulator maintainability and reliability

    SMR specialized mobile radio

    SMR surface movement radar

    SMS safety management system

    SMS short messaging service

    SMS spectrum monitoring system

    SMT benchmark message text

    SMU sensor management unit

    SMUG stores management upgrade system

    SN subnetwork

    SNA system network architecture

    SNAC SN access

    SNCR SN connection reference

    SNDCF SN conditional convergence function

    SNDCF/P SNDCF/protocol

    SNICF SN independent convergence function

    SNLE SN link establishment

    SNMP simple network management protocol

    SNMPv1 SNMP version 1

    SNPA SN point of attachment

    SNPDU SN protocol data unit

    SNPRM supplemental notice of proposed rulemaking

    SNR signal-to-noise ratio

    SNSDU SN service data unit

    SOC service operations center

    SOC system on a chip

    SOF Special Operations Forces

    SOH start of header

    SOI system operator instructions

    SOIA simultaneous offset instrument approach

    SOM software operator manual

    SOIT satellite operational implementa­tion team

    SON statement of operational need

    SOP benchmark operating procedure

    SOSCOE System-Of-Systems Common Operating Environment

    SOW statement of work

    SP signal processing

    SPAR Survivability Planner Associate Re-router

    SPEAR system performance evaluation and analysis reporting

    SPCR system problem/change report

    SPI serial peripheral interface

    SPI-IR surveillance performance and interoperability implementing rule

    SPICE STANS preparation integrator for CNS/ATM environment (Eurocontrol)

    SPM software programmer’s manual

    SPO system program office

    SPR safety and performance requirements

    SPS software product specification

    SPS benchmark positioning service

    SPS stratospheric platform system

    SPTF Spectrum Policy job favor (FCC)

    SQ service quality

    SQAP software trait assurance plan

    SQB SQ/billing processor

    SQD SQ data

    SQP signal trait parameter

    SRAM static random access memory

    SREJ selective reject

    SRM selective reject mode

    SRM systematic risk management

    SRR system/software requirements review

    SRS software requirements specification

    SRTM shuttle radar topography mission

    SRU shop replaceable unit

    SRW Soldier Radio Waveform

    SSA source selection activity

    SSA system safety assessment

    SSAC source selection advisory committee

    SSAP strategic safety action plan

    SSB lone side band

    SSDD system/segment design document

    SSE safety, security and environmental performance

    SSEB source selection evaluation board

    SSOI sidestick order indicator

    SSR secondary surveillance radar

    SSS surveillance server system

    SSS system/segment specification

    SSU subsequent signal unit

    STA scheduled time of arrival

    STANAG standardization agreement

    STANS simulation for a total air naviga­tion system (Eurocontrol)

    STAP space-time adaptive processing

    STAR benchmark terminal arrival route

    STARS benchmark terminal automation replacement system (FAA)

    STB systems test bed

    STC supplemental nature certificate

    STCA short-term traffic advisory

    STD standard

    STD system technical description

    STDMA self-organized time division multiple access

    STDMA synchronized time division multiple access

    STF SATCOM tracking facility

    STIU satellite telecommunications intermediate unit

    STK Scandinavian Surveillance Office

    STM serial transition module

    STMS surface traffic management system

    STOL short takeoff and landing

    STOVL short takeoff/vertical landing

    STP system test plan

    STP/D STP/description

    STR system technical report

    STR system test report

    STVS minuscule tower voice switch

    STX start of text

    STUAS minuscule tactical unmanned aircraft system

    SU signal unit

    SUA special spend airspace

    SUB subscribe

    SUM software user manual

    SUPPS regional supplementary procedures (ICAO)

    SUT system under test

    SVC switched virtual circuit

    SvRR service readiness review

    SVS synthetic vision system

    SVU satellite voice unit

    SW software

    SWAP strict weather avoidance procedure program

    SWaP size, weight and power

    SWARM Smart Warfighting Array of Reconfigurable

    Modules (U.S. Army)

    SWIM System Wide Information Man­agement (FAA)

    SWIT software integration and test

    SWIT switched virtual circuit

    SWTP software technology plan

    SWTRR software test readiness review

    SYS system identifier

    SYSCAT-B system category-B (FAA message format)

    SysCI system configuration item

    SysDD system design document


    T-PED transmitting portable electronic device

    T&E test and evaluation

    TA tailored arrivals

    TA target acquisition

    TA traffic advisory (TCAS)

    TAA technical advanced aircraft

    TAC Theater Aviation Command

    TACAN tactical air navigation

    TADSS training aides, devices, simulators, simulations

    TAF terminal aerodrome forecast

    TAF terminal area forecast (ICAO)

    TAIC transport accident investigation commission

    TAIS total airport management system

    TAMD theater air and missile defense

    TAMR Terminal Automation Modernization Replacement

    TAOARC Terminal area Operations Aviation Rulemaking

    Committee (FAA)

    TAR trials ATN router

    TAP terminal area procedure

    TAP tower automation program

    TAS traffic advisory system

    TASS terminal air surveillance system

    TAT total air temperature

    TAWS terrain avoidance warning system

    TBFM time based flow management

    TBM time based metering

    TBO trajectory based operations

    TC transport connection

    TCA terminal control area

    TCAD traffic jolt alerting device

    TCAS traffic alert jolt avoidance system

    TCAS II traffic alert jolt avoidance system II

    TCC turbine clearance control

    TCDL tactical common data link

    TCP transmission control protocol

    TCP/IP TCP/Internet protocol

    TCS tower communications system

    TD technical documentation

    TDF training device facility requirements

    TDLS tower data link services (system)

    TDM time division multiplexed

    TDMA time division multiple access

    TDOA time distinction of arrival

    TDST tower data services terminal

    TDWR terminal Doppler weather radar

    TDZE TouchDown zone elevation

    TECOM technical committee

    TEDS transducer electronic data sheet

    TEI text factor identifiers

    TELCO telephone company

    TEN-T trans-European network-transport

    TERA Terminal Enhancements for RNAV ATC

    TERCOM terrain contour matching

    TERPS terminal en route procedures

    TERPS terminal instrument procedures

    TES tactical exploitation system

    TES trials intermission system (for ATN)

    TESCOS terminal coordination system

    TF5 job favor 5 (RTCA)

    TFC traffic

    TFDM tower flight data manager/management

    TFM traffic flow management

    TFM-M Traffic flow Management Mod­ernization (FAA)

    TFMS traffic flow management system

    TFR temporary flight restriction

    TFTP picayune file transfer protocol

    TG transmission gate

    TG4 maximum time between GSIF’s timer

    TG5 maximum link overlap timer TGT target

    TIA Telecommunications Industry Association

    TIF traffic information file

    TIP tower integrated program

    TIS traffic information service

    TIS traffic information system

    TIS-B traffic information service-broad­cast

    TL terminal location (ACARS/AFEPS)

    TLS target even of safety

    TM technical manual

    TMA traffic management advisor

    TMC traffic management coordinator

    TMC test, monitor and control

    TMI traffic management initiative

    TMOS Transformational Satellite Com­munications System Mission Operations System

    TM&O telecommunications manage­ment and operations

    TMLLF terrain masking low-level flight

    TMMAC tactical airborne moving map capability

    TMS-T traffic management system transition

    TMU traffic management unit

    TO technical order

    TOA time of applicability

    TOC Tactical Operations Center

    TOC transfer of communications

    TOFT tactical operational flight trainer

    TO/GA purchase off/go around

    TOM time of measurement

    TOR terms of reference (ICAO/FAA)

    TOT time of transmission

    TOW takeoff weight

    TP test point

    TP4 transport protocol class 4

    TPA taxi positional awareness

    TPAW turbulence prediction and warn­ing system

    TPDU transport protocol data unit

    TPF transaction processing facility

    TPL terminal authorization list

    TPM technical performance management

    TPU terminal processing units

    TQM total trait management

    TRACON terminal radar approach control

    TRADOC Training and doctrine Command (U.S. Army)

    TRB technical review board

    TRD transit routing domain

    TRNS terrain referenced navigation system

    TRR test readiness review

    TS time source

    TS transport service

    TSA technical services agreement

    TSA temporary segregated areas

    TSA Transportation Security Administration (U.S.)

    TSAP transport service access point

    TSAT Transformational Satellite Com­munications System

    TSB Transportation Safety Board (Canada)

    TSC term service commitment

    TSC transportation system center

    TSDP technical advocate and data packages

    TSDU transport service data unit

    TSG technical subgroup

    TSG technical standards and guidelines

    TSO technical benchmark order (FAA)

    TSOA technical benchmark order authorization

    TSP tactical signal intelligence payload

    TSP transmitted signal power

    TSS technology advocate and services

    TSPD technical advocate and data package

    TSTM time source transition module

    TT test tools

    TTG time to go

    TTL transistor-transistor logic

    TTNT tactical targeting networking technology

    TTP time-triggered protocol

    TTP tactics, techniques and procedures

    TTS time to station

    TTW time to waypoint

    TUAS tactical unmanned aerial system

    TUAV tactical unmanned aerial vehicle

    TURB turbulence

    TVE total plumb error

    TWDL two-way data link communica­tions

    TWIP terminal weather information for pilots

    TWP technical labor program

    TX transmit


    UA unmanned aircraft

    UA unnumbered acknowledgment

    UART universal asynchronous receiver transmitter

    UAS unmanned aircraft system

    UASTB Unmanned Aircraft System Training Battalion

    (U.S. Army)

    UAT universal access transceiver

    UATP universal air travel plan

    UAV unmanned aerial vehicle

    UBI uplink screen identifier

    UCAV unmanned combat aerial vehicle

    UCD universal cockpit display

    UCI user computer interface

    UD user data

    UDF unducted fan

    UDP user datagram protocol

    UGCS universal ground control station

    UGDT universal ground data terminal

    UGS unattended ground sensors

    UHF ultra-high frequency

    UI unnumbered information

    UIR upper information region

    UL uplink

    ULV ultra-low voltage

    ULWG upper layer working group

    UML unified modeling language

    UMS unmanned system

    UMTS universal mobile telecommuni­cations system

    UP universal platform

    UPRM universal platform resource management

    UPS uninterruptible power supply

    URET user request evaluation tool

    URL universal resource locator

    USAACE United States Army Aviation seat of Excellence

    USAF U.S. Air Force

    USB universal serial bus

    USC United States code

    USCG U.S. Coast Guard

    USSOCOM United States Special Operations Command

    UTC universal time coordinated

    UTP unshielded twisted pair

    UV ultraviolet

    UUT unit under test

    UWB ultra wide-band


    V volt

    VITA VMEbus International Trade Group

    V/ULOS versions of the HaveQuick and VHF/UHF

    line of sight

    V&V verification and validation

    VAC volts alternating current

    VAD Visual Acquisition Disrupter

    VAM value-added manufacturer

    VANS value-added network services

    VAR value-added reseller

    VAP value-added processor

    VAS value-added services

    VASI visual approach slope indicator

    VBV variable bleed valve

    VC virtual circuit

    VCB virtual circuit bridge

    VCDU video control parade unit

    VCU VDL control unit

    VDC volts direct current

    VDD version description document

    VDGS visual docking guidance system

    VDL VHF data link

    VDL4 VHF Data Link Mode 4

    VDLM2 VDL Mode 2

    VDLM3 VDL Mode 3

    VDLM4 VDL Mode 4

    VDR VHF data radio

    VDU visual parade unit

    VEE visual engineering environment

    VER version

    VFD virtual flight deck

    VFOM plumb figure of merit

    VFR visual flight rules

    VGA video graphics adapter

    VGA video graphics array

    VG/DG plumb gyro/directional gyro

    VGS VDLM2 ground station

    VHF very tall frequency

    VHSIC very tall accelerate integrated cir­cuit

    VIA many-sided integrated avionics

    VIP verbal intruder positioning

    VLJ very light jet

    VLSI very big scale integration

    VMC vehicle management computer

    VMC visual meteorological conditions

    VMD video motion detection

    VME versa module Eurocard bus

    VME VHF management entity (VMEbus)

    VMECC versa module Eurocard card cage

    VMON VNMS health monitoring

    VMS vehicle management system

    VNAV plumb navigation

    VNE never-exceed speed

    VNMS VDLM2 network management system

    VNO maximum structural cruising speed

    VOCRAD voice radio

    VOIP voice over Internet protocol

    VOR VHF omnidirectional radio range

    VPN virtual private network

    VPT virtual procedure trainer

    Vr 157 knots

    VR rotation speed

    VREF approach reference speed

    VRG VDL reference guide

    VSAT very minuscule aperture terminal

    VSCS voice switching and control system

    VSD VDL specific DTE address

    VSM plumb separation minimum

    VSRS voice switch replacement sys­tem

    VSTC validation of supplemental nature certificate

    VSWR voltage standing wave radio

    VTAM virtual telecommunications access method

    VTAS voice, throttle and stick

    VTOL plumb takeoff and landing

    VTS vessel traffic system

    VUIT-2 Video from Unmanned Aerial Systems

    for Interoperability Teaming even II


    WAAS wide area augmentation system

    WACS wireless airport communication system

    WADGPS wide area differential GPS

    WAFC world area forecast center

    WAM wide area multilateration

    WAN wide area network

    WARC World Administrative Radio Conference

    WARP weather and radar processor

    WAS wide area search

    WASP wireless access service point

    WATRS west Atlantic route structure

    WBS weight equilibrium system

    WBS labor breakdown structure

    WC waypoint capture

    WDM wavelength division multiplexed

    WDM LAN wavelength division multiplexed local area network

    WG working group (EUROCAE)

    Wi-Fi wireless fidelity

    WGS world geodetic system

    Wilco will comply

    WIN-T Warfighter Information Network

    WINN Weather Information Network

    WIP wide area augmentation system integrity panel

    WIPPS wide-body integrated platform protection system

    WJHTC William J. Hughes Technical seat (FAA)

    WLG wireless ground-link

    WMO World Meteorological Organiza­tion

    WMSCR weather message switching seat replacement

    WNW wideband networking waveform

    WORM write-once/read many (optical disk technology)

    WP labor procedure

    WPR waypoint position report

    WPT waypoint

    WQAR wireless quick access recorder

    WRC World Radiocommunication Conference

    WS windshear

    WSDDM weather advocate for deicing decision-making

    WSR weather surveillance radar

    WTMA Wake Turbulence Mitigation for Arrivals

    WTMD Wake Turbulence Mitigation for Departures

    WWG wireless working group

    WWW/E who, what, where/performance evaluation (RTCA)

    WX weather

    WXR weather radar


    X cancel

    XID exchange identification

    XFR transfer

    XL-ETFE cross-linked ethylene tetraflourothylene

    XMC switched fabric mezzanine card

    XMIT transmit

    XMTR transmitter

    XPDR transponder

    XTI X-open transport interface

    XTP express transfer protocol

    XTRA X-ban thin radar aperture

    XWIND crosswind


    ZCA zero conflict airspace

    ZFW zero fuel weight

    ZOC zone of convergence

    Zulu Greenwich connote time

    ZVF zero velocity filter

    For additions or corrections to the online version and the next print edition of the Avionics Magazine Aerospace Acronym & Abbreviation Guide, contact the editors:

    Bill Carey at bcarey@accessintel.com, or Emily Feliz at efeliz@accessintel.com.

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    Android [4 Certification Exam(s) ]
    APA [1 Certification Exam(s) ]
    APC [2 Certification Exam(s) ]
    APICS [2 Certification Exam(s) ]
    Apple [69 Certification Exam(s) ]
    AppSense [1 Certification Exam(s) ]
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    Arizona-Education [1 Certification Exam(s) ]
    ARM [1 Certification Exam(s) ]
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    Medical [68 Certification Exam(s) ]
    Microsoft [375 Certification Exam(s) ]
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    Military [1 Certification Exam(s) ]
    Misc [1 Certification Exam(s) ]
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    mySQL [4 Certification Exam(s) ]
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    NCLEX [3 Certification Exam(s) ]
    Network-General [12 Certification Exam(s) ]
    NetworkAppliance [39 Certification Exam(s) ]
    NI [1 Certification Exam(s) ]
    NIELIT [1 Certification Exam(s) ]
    Nokia [6 Certification Exam(s) ]
    Nortel [130 Certification Exam(s) ]
    Novell [37 Certification Exam(s) ]
    OMG [10 Certification Exam(s) ]
    Oracle [282 Certification Exam(s) ]
    P&C [2 Certification Exam(s) ]
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    PayPal [1 Certification Exam(s) ]
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    PEOPLECERT [4 Certification Exam(s) ]
    PMI [15 Certification Exam(s) ]
    Polycom [2 Certification Exam(s) ]
    PostgreSQL-CE [1 Certification Exam(s) ]
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    Riverbed [8 Certification Exam(s) ]
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    SAP [98 Certification Exam(s) ]
    SASInstitute [15 Certification Exam(s) ]
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    SDI [3 Certification Exam(s) ]
    See-Beyond [1 Certification Exam(s) ]
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    Social-Work-Board [4 Certification Exam(s) ]
    SpringSource [1 Certification Exam(s) ]
    SUN [63 Certification Exam(s) ]
    SUSE [1 Certification Exam(s) ]
    Sybase [17 Certification Exam(s) ]
    Symantec [135 Certification Exam(s) ]
    Teacher-Certification [4 Certification Exam(s) ]
    The-Open-Group [8 Certification Exam(s) ]
    TIA [3 Certification Exam(s) ]
    Tibco [18 Certification Exam(s) ]
    Trainers [3 Certification Exam(s) ]
    Trend [1 Certification Exam(s) ]
    TruSecure [1 Certification Exam(s) ]
    USMLE [1 Certification Exam(s) ]
    VCE [6 Certification Exam(s) ]
    Veeam [2 Certification Exam(s) ]
    Veritas [33 Certification Exam(s) ]
    Vmware [58 Certification Exam(s) ]
    Wonderlic [2 Certification Exam(s) ]
    Worldatwork [2 Certification Exam(s) ]
    XML-Master [3 Certification Exam(s) ]
    Zend [6 Certification Exam(s) ]

    References :

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