-
3D, 4D three- or four-dimensional
-
3G third generation
-
4096 Code combinations of four-digit transponder code
-
A ampere(s)
-
A autotuned navaid
-
A-BPSK aviation binary phase shift keying
-
A-QPSK aeronautical quadrature phase shift keying
-
A-SMGCS advanced surface movement guidance and control systems
-
A/B autobrake
-
A/C aircraft
-
A/D analog-to-digital
-
A/G air/ground; air to ground
-
A/L airline
-
A/L autoland
-
A/N alphanumeric
-
A/P autopilot
-
A/T autothrottle
-
A&P airframe and power plant
-
AAC aeronautical administration communications
-
AAC airline administrative communications
-
AAIB Air Accident Investigation Branch (U.K. equivalent of NTSB)
-
AAF airway facilities service
-
AAI Airline Avionics Institute
-
AAIPT Aging Aircraft Enterprise Team
-
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
-
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 collision avoidance system
-
ACC active 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
-
ACIPS airfoil cowl ice protection system
-
ACF area control facility
-
ACK acknowledgment
-
ACMF airplane condition monitoring function
-
ACMP alternating current motor pump
-
ACMS aircraft condition monitoring system
-
ACNSS advanced communication/navigation/surveillance system
-
ACP audio control panel
-
ACS active control system
-
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)
-
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
-
ADE application development 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
-
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 address
-
ADR Advanced Data Research
-
ADR alternative dispute resolution
-
ADRAS airplane data recovery and analysis system
-
ADS air data system
-
ADS automatic dependent surveillance
-
ADS-A automatic dependent surveillance-addressed
-
ADS-A automatic dependent surveillance-automation
-
ADS-B automatic dependent surveillance-broadcast
-
ADS-C ADS-contract
-
ADS-R ADS-rebroadcast
-
ADSEL address selective
-
ADSP automatic dependent surveillance panel
-
ADSSG ADS Study Group (ICAO)
-
ADSU automatic dependent surveillance unit
-
ADT air data tester
-
AEA Aircraft Electronics Association
-
AECU audio electronic control unit
-
AED ALGOL extended for design
-
AEEC formerly Airlines Electronic Engineering Committee (ARINC)
-
AEP ARINC engineering practices
-
AEP audio entertainment player
-
AERA automated en route air traffic control
-
AES aircraft earth station (Inmarsat)
-
AESA active electronically scanned array
-
AESS aircraft environment surveillance system
-
AEW airborne early warning
-
AEW&C Airborne Early Warning and Control
-
AF airway facilities
-
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 collection and reporting system
-
AFIS airborne flight information system
-
AFIS automated flight inspection system
-
AFM aircraft flight manual
-
AFMS automatic flight management system
-
AFN air traffic services facilities notification
-
AFP Airspace Flow Program
-
AFRL Air Force 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 artificial 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 standard (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 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
-
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 automatic information services (Eurocontrol)
-
AISG Applications Interface Sub-Group (IATA)
-
AIV accumulator isolation valve
-
AJPS AFEPS journal processing system
-
AKO Army Knowledge Online
-
ALC airline link control
-
ALC asynchronous link control
-
ALC automatic level control
-
ALMDS airborne laser mine detection system
-
ALPA Air Line Pilots Association
-
ALPS automatic line protection service
-
ALS application layer structure
-
ALT airborne link terminal
-
ALT altitude/alternate
-
ALT-HOLD altitude hold mode
-
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 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
-
AMLCD active matrix liquid crystal display
-
AMIS aircraft management information system
-
AMOSS airline maintenance and operation support 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
-
AMS(R)S aeronautical mobile satellite (route) service
-
AMSS aeronautical mobile satellite service
-
AMTOSS aircraft maintenance task oriented support 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
-
ANR active noise reduction
-
ANS air navigation system
-
ANS ambient noise 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
-
AOA ACARS over AVLC
-
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 autopilot computer
-
APCO Association of Public Safety Communications Officials
-
APFA Association of Professional Flight Attendants
-
APFDS autopilot flight director system
-
APEX application/executive software
-
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 quality system
-
ARB arbitrary waveform generator
-
ARC aviation rulemaking committee (FAA)
-
ARD advanced requirement definition
-
ARDEP analysis of research & development in Eurocontrol programs
-
ARF airline risk factor
-
ARM area regional manager
-
ARMC area regional maintenance center
-
ARP air data reference panel
-
ARTAS ATM surveillance tracker and server
-
ASAS aircraft separation assurance system (AEEC)
-
ASAS aviation safety analysis system
-
ASC aircraft system controller
-
ASC aural synthesizer card
-
ASCII American standard code for information interchange
-
ASCB avionics standard 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-X airport surface detection equipment, model X
-
ASDI Aircraft Situation Display to Industry
-
ASDL aeronautical satellite data link
-
ASDR airport surface detection radar
-
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 altitude set panel
-
ASP arrival sequencing program
-
ASPP application specific programmable processor
-
ASR airport surveillance radar
-
ASRAAM advanced short range air-to-air missile
-
ASRS aviation safety reporting system
-
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 task 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
-
ATSRAC Aging Transport Systems Rulemaking Advisory Committee
-
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
-
ATM DSS ATM decision support 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/standard case dimensions
-
ATS air traffic services
-
ATS air turbine starter
-
ATS autothrottle system
-
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 (FAA)
-
ATSU air traffic services unit
-
ATWR apron tower (and operator)
-
AUSRIRE All 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)
-
AVLAN avionics local area network
-
AVLC aviation VHF link control
-
AVM airborne vibration monitor
-
AVN avionics
-
AVOD audio and video channels on demand
-
AVOL aerodrome visibility operational level
-
AVPAC aviation VHF packet communications
-
AVS aviation VHF seat availability (messages)
-
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 all weather operations
-
AWOP AWO panel
-
AWOS automated/airport weather observing system
-
AWR aviation weather research
-
AZ azimuth: angular measurement in horizontal plane
