By Staff Writer | February 5, 2021 Send Feedback
14 CFR Title 14 of the Code of Federal Regulations
A-BPSK aviation binary phase shift keying
A-QPSK aeronautical quadrature phase shift keying
A-SMGCS advanced surface movement guidance and control systems
A/FD Airport/Facility Directory
A/G air/ground; air to ground
A&P airframe and power plant
AAC airline administrative communications
AAIB Air Accident Investigation Branch (U.K. equivalent of NTSB)
AAIPT Aging Aircraft Enterprise Team (Naval Air Systems Command)
AAIU air accident investigation unit
AALC autonomous approach landing capability
AAMP advanced architecture microprocessor
AATD Aviation Applied Technology Directorate (U.S. Army)
AATT advanced air transportation technology
AAS advanced automation system (FAA)
ABCS Army Battle Command System
ABSAA Airborne Sense and Avoid
ACAA Air Carrier Association of America
ACAMS aircraft condition analysis management system
ACARS aircraft communications addressing and reporting system
ACAS airborne collision avoidance system
ACDO Air Carrier District Office
ACI-NA Airport Council International - North America
ACIPS airfoil cowl ice protection system
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)
ACTC airport traffic control towers
ACTD advanced concept technology demonstration
ADAHRS air data attitude heading reference system
ADAS automated weather observing system data acquisition system
ADC analog to digital converter
ADIRS air data inertial reference system
ADIRU air data inertial reference unit
ADIZ Air Defense Identification Zone
ADLP airborne data link protocol
ADLP aircraft data link processor (Mode S)
ADMS airline data management system
ADRAS airplane data recovery and analysis system
ADSP automatic dependent surveillance panel
ADSSG ADS Study Group (ICAO)
ADSU automatic dependent surveillance unit
AECU audio electronic control unit
AEDT Aviation Environmental Design Tool
AEE Office of Environment & Energy (FAA)
AEEC formerly Airlines Electronic Engineering Committee (ARINC)
AERA automated en route air traffic control
AES aircraft earth station (Inmarsat)
AESA active electronically scanned array
AESS aircraft environment surveillance system
AEW&C Airborne Early Warning and Control
AFC Aeronautical Frequency Committee (AEEC)
AFC automatic frequency compensation
AFCAS automatic flight control augmentation system
AFCS automatic flight control system
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
AFIRS autonomous flight information reporting system
AFIS airborne flight information system
AFIS automated flight inspection system
AFMS airplane flight manual supplement
AFMS automatic flight management system
AFN air traffic services facilities notification
AFRL Air Force Research Lab
AFS aeronautical fixed service (ICAO)
AFSK audio frequency shift keying
AFSS automated flight service stations
AFTN aeronautical fixed telecommunications network
AFTRCC Aerospace and Flight Test Radio Coordinating Council
AGACS automatic A/G communication system
AGAE A/G applications engineering
AGATE Advanced General Aviation Transport Experiments (NASA)
AGCOS A/G communication services
AGCU auxiliary generator control unit
AGDL A/G data link
AGIS A/G intermediate system
AGRM air/ground router-regional manager
AGSS ACARS ground system standard (AEEC)
AGTS A/G test station
AGVS A/G voice sub-network
AHMS aircraft health monitoring system
AHRS attitude heading reference system
AIAA American Institute of Aeronautics and Astronautics
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
AIM airman’s information manual
AIMS airplane information management system (Boeing 777)
AIMS airport information management system
AINSC aeronautical industry service communication
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 Automated Identification System (U.S. Army)
AIS automatic information services (Eurocontrol)
AISG Applications Interface Sub-Group (IATA)
AIT Advanced Individual Training (U.S. Army)
AJPS AFEPS journal processing system
ALMDS airborne laser mine detection system
ALPA Air Line Pilots Association
ALPS automatic line protection service
ALSF-2 Approach Lighting System with Sequenced Flashing Light-Model 2
AltBOC alternate binary offset carrier
ALU arithmetic and logic unit
AMASS airport movement area safety system
AMC acceptable means of compliance (EASA)
AMCP aeronautical mobile communications panel
AMF Airborne, Maritime and Fixed Station
AMF JTRS Airborne and Maritime/Fixed Station Joint Tactical Radio System
AMLCD active matrix liquid crystal display
AMIS aircraft management information system
AMOSS airline maintenance and operation support system
AMRAAM Advanced Medium-Range Air to Air Missile
AMSL above mean sea level
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
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 air navigation plan/performance
ANPA advanced notice of proposed amendment
ANPE actual navigation performance effect
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 Area of Operation (U.S. Army)
AOA ACARS over aviation VHF link control
AOAS advanced oceanic automation system
AOC Airline Operational Control Center
AOCC airline operations control center
AODC age of data, clock (GPS)
AODE age of data, ephemeris (GPS)
AOHE air/oil heat exchanger
AOPA Aircraft Owners and Pilots Association
AP airport location (ACARS/AFEPS)
APANPIRG Asia/PAC Air Navigation Planning & Implementation Regional Group
APAS Active/Passive Aircraft Survivability
APCO Association of Public-Safety Communications Officials - International
APFA Association of Professional Flight Attendants
APFDS autopilot flight director system
APEX Airline Passenger Experience Association (formerly WAEA)
APIM ARINC Industry Activities Project Initiation/ Modification
APIRS attitude and positioning inertial reference system
APMS automated performance measurement system
APLC airport performance laptop computers
APRL ATN profile requirement list
APUC auxiliary power unit controller
AQP avionics qualification procedure/program
ARC aviation rulemaking committee (FAA)
ARDEP analysis of research & development in Eurocontrol programs
ARMC area regional maintenance center
ARMS Airspace resource management system
ARNS aeronautical radio navigation services
ARTAS ATM surveillance tracker and server
ARTCC air route traffic control center
ARTP NextGen Aviation Research and Technology Park
ARTS automated radar terminal system
ASAS aircraft separation assurance system (AEEC)
ASAS aircraft surveillance application system
ASAS aviation safety analysis system
ASCII American standard code for information interchange
ASCB avionics standard communication bus
ASCPC air supply and cabin pressure controllers
ASCS air supply control system
ASDE airport surface detection equipment
ASDE-3 airport surface detection equipment, model 3
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 aircraft survivability equipment (U.S. Army)
ASECNA Agency for Security of Aerial Navigation in Africa and Madagascar
ASIAS Aviation Safety Information Analysis and Sharing (FAA)
ASIC application specific integrated circuit
ASME American Society of Mechanical Engineers
ASOR Allocating Safety Objectives and Requirements
ASOS automated surface observation system
ASP aeronautical fixed service systems planning (AFS)
ASP Airspace Systems Program (NASA)
ASPIRE Asia and Pacific Initiative to Reduce Emissions
ASPP application specific programmable processor
ASRAAM advanced short range 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 task force
ASTM American Society for Testing and Materials
ASTOR Airborne Stand-Off Radar (U.K.)
ASVI avionics serial video interface
ATA actual time of arrival
ATAS aviation traffic and application software
ATCA Air Traffic Control Association
ATCC area and terminal control center
ATCRBS ATC radar beacon 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 avionics test and evaluation
ATFM air traffic flow management
ATG advanced concept technology demonstration
ATIDS airport surface target identification system/ service
ATIS airport traffic information system
ATIS automatic terminal information service
ATLAS abbreviated test language for avionics systems
ATMAC Air Traffic Management Committee (RTCA)
ATMB Air Traffic Management Bureau (China)
ATM DSS ATM decision support service
ATMS area navigation, test and management services
ATN aeronautical telecommunication network
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 air transport radio: ARINC form-factor/ standard case dimensions
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 All Union Scientific Research Institute of Radio Equipment: CIS (former Soviet) agency
AVC aviation VHF car rental availability (messages)
AVH aviation VHF hotel availability (messages)
AVIM Aviation Intermediate Level Maintenance (U.S. Army)
AVLAN avionics local area network
AVLC aviation VHF link control
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
AWIN advanced weather information system
AWIPS advanced weather interactive processing system
AWLU aircraft wireless LAN unit
AWOS automated/airport weather observing system
AZ azimuth: angular measurement in horizontal plane
BAMS Broad Area Maritime Surveillance
BCT Brigade Combat Team (U.S. Army)
BCTM Brigade Combat Team Modernization (U.S. Army)
BDMIS business data management and invoicing system
BDRVT Bi-Diretional Remote Video Terminal
BEA Bureau d’Enquetes Accidents (French equivalent of NTSB)
BGARS basic general aviation research simulator
BiG bilingual ground station (ACARS and VDL Mode 2)
BIH Bureau l’International de l’Heure
BLOS beyond line of sight
BNS boundary notification system (squitters)
BOP/COP bit-oriented protocol/character-oriented protocol
BPCU bus power control unit
BPSK binary phase shift keying
BSCU brake system control unit
BTMU brake temperature monitor unit
BUFR binary universal form for communication representation
BWAN BU wide area network
Byte a grouping of eight bits
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/SOIT communications/surveillance operational implementation team
C/UT code/unit test
C&C command and control
C&W control and warning
CAAC Civil Aviation Administration of China
CAAFI Commercial Aviation Alternative Fuels Initiative (FAA)
CAAS common avionics architecture system
CAASD Center for Advanced Aviation System Development (MITRE Corp.)
CAB combat aviation brigade (U.S. Army)
CACP cabin area control panel
CADC central air data computer
CADS centralized automatic dependent surveillance
CAGE commercial avionics GPS engine
CALSEL variation of SELCAL system
CANSO Civil Air Navigation Services Organization
CAOC Combined Air Operations Center
CAP Civil Air Patrol (U.S.)
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
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)
CASR Civil Aviation Safety Regulations
CASS Consolidated Automated Support System
CAT categories (I, II, IIIa/b/c) approach
CATM Collaborative Air Traffic Management
CATMT Collaborative Air Traffic Management Technologies
CAVS CDTI assisted visual separation
CBP Customs and Border Patrol (U.S.)
CBRNE chemical, biological, radiological, nuclear high yield explosives (U.S. Army)
CCIR International Radio Consultative Committee
CCITT Consultative Committee International Telephone and Telegraph
CCSD common constraint situation display
CDAM centralized data acquisition module
CDAM common data acquisition module
CDMS control and data management system
CDQM collaborative departure queue management
CDSS cockpit door surveillance system
CDTI cockpit display of traffic information
CENTCOM U.S. Central Command
CENTRIXS Combined Enterprise Regional Exchange System
CEQ Council on Environmental Quality
CFDIU centralized fault display interface unit
CFDS central fault display system
CFDU configurable file data unit
CFIT controlled flight into terrain
CFM cubic feet per minute
CFMU central flow management unit
CFR Code of Federal Regulations
CHAIN Compartmented High Assurance Information Network
CHIS center hydraulic isolation system
CIDIN common ICAO data interchange network
CIDS cabin interphone distribution system
CIE Commission Internationale de I‘Eclairage
CIP convergence & implementation program (Eurocontrol)
CLEEN Continuous Lower Energy, Emissions and Noise Program (FAA)
CLTP connectionless mode transport protocol
CMOS complementary metal oxide semiconductor
CNES Centre National d’Etudes Spatiales (France)
CNG 2020+ carbon neutral growth from 2020 and beyond (AIA)
CNI communications, navigation and identification
CNS/ATM communications, navigation, surveillance/air traffic management
CNSI communications/navigation/surveillance/ identification
CNUS cabin network server unit
COCOM combatant commander (U.S. Army)
COMINT/DF COMINT direction finding
COM/MET/OPS communications/meteorological/ operations
CONEMP concept of employment (U.S. Army)
COP common operating picture (U.S. Army)
COTR contracting officer’s technical representative
CPA closest point of approach
CPA collision prediction and alerting
CPCI computer program configuration item
CPCS cabin pressure control system
CPDLC controller-pilot data link communications
CRAF Civil Reserve Air Fleet
CRC cyclic redundancy checking/code
CRD Concepts and Requirements Directorate (U.S. Army)
CRADA cooperative research and development agreement
CRDA converging runway display aid
CRM crew/cockpit resource management
CRPA controlled reception pattern antenna
CRS Congressional Research Service (U.S.)
CRISD computer resources integrated support document
CRISTAL CoopeRative Validation of Surveillance Techniques and Applications (Eurocontrol)
CRMA code reuse multiple access
CRTC combat readiness training center
CSCI computer software configuration item
CSD Coalition Shared Databases (U.S. Army)
CSMA carrier sense multiple access
CSMA/CD carrier sense multiple access with collision detection
CSCP cabin system control panel
CSDB commercial standard data bus
CSDS cargo smoke detector system
CSEU control systems electronics unit
CSMM crash survivable memory modules
CSMU cabin system management unit
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
CTA controlled time of arrival
CTAF common traffic advisory frequency
CTAS center TRACON automation system
CTC combat training centers (U.S. Army)
CTMO centralized air traffic flow management organization
CTOL conventional take-off and landing
CTRD configuration test requirements document
CTS/TCTS combat training system/tactical combat training system
CUTE common use terminal equipment
CV/DFDR cockpit voice and digital flight data recorder
CVRCP cockpit voice recorder control panel
CWID Coalition Warrior Interoperability Demonstration
CWP controller/ed working position
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
DABS discrete addressable beacon system
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 download of aircraft parameter
DARC direct access radar channel
DARP dynamic aircraft route planning
DARPA Defense Advanced Research Projects Agency (U.S.)
dBI dB referenced to an isotropic antenna
dBI decibels above isotopic circular
dBW dB-watts or referenced to 1 watt
DCA Department of Civil Aviation (Thailand)
DCAS digital control audio system
DCGF data conversion gateway function
DCMF data communication management function
DCMS data communication management system
DCN document/drawing/design change notice
DDM difference in depth of modulation
DDP declarations of design and performance
DDRMI digital distance radio magnetic indicator
DERA Defense Research and Evaluation Agency (U.K.)
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 function interactive display unit
DFIU digital flight instrument unit
DFS Deutsche Flugsicherung GmbH (Germany)
DfT Department for Transport (U.K.)
DGNSS differential global navigation satellite system
DGPS differential global positioning system
DHCP dynamic host configuration protocol
DHS Department of Homeland Security
DIGNU deeply integrated guidance and navigation unit
DISA Defense Information Systems Agency (U.S.)
DITS data information transfer system
DLAP data link application processor
DLCI data link control identifier
DLM data link management unit
DLME data link and message engineering
DL/MSU data loader/mass storage unit
DLORT data link operational requirements team
DLS data link service/system
DMS data link management system
DoD Department of Defense (U.S.)
DoT Department of Transportation (U.S.)
DOTS dynamic ocean tracking system
DPSK differential phase shift keying
DRAM dynamic random access memory
DRER designated radio engineering representative (FAA)
DRVSM domestic reduced vertical separation minimum
DSAD digital service access device
DSARC defense system acquisition review cycle
DSDU data signal display unit
DSP data link service provider
DT&E development test and evaluation
DTED digital terrain evaluation data
DTMF dual tone multifrequency (telephone)
DTPDU data protocol data unit
DTRS data transceiver router server
DUAT direct user access terminal
DUATS direct user access terminal system
DUST dual-use science and technology
DVF demonstration and validation facility
DVMC digital video map computer
DVOR Doppler VHF omnidirectional range DVRS digital voice recorder system
DWAN direct wide area network
E&E electronics and equipment
EAD European AIS database (Eurocontrol)
EADI electronic attitude director indicator
EADS European Aeronautic Defence and Space Co.
EAFR enhanced airborne flight recorder
EANPG European Air Navigation Planning Group
EAROM electrically alterable read-only memory
EARTS en route automated radar tracking system
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 Development Association
ECAC European Civil Aviation Conference
ECAM electronic caution alert module
ECJ European Court of Justice
ECMP electronic component management system
ECSL left environmental control system card
ECSR right environmental control system card
EDAC error detection and correction
EDARC enhanced direct access radar channel
EDC error detection and correction
EDDS electronic document distribution service
EDIF engine data interface function
EDIS emergency digital information service
EDIU engine data interface unit
EDMS electronic data management system
EEAS enhanced en-route automation system
EEPROM electrical erasable programmable ROM
EEU electrical load management system electronics unit
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
EGNOS European Geostationary Overlay System
EGPWS enhanced ground proximity warning system
EHSI electronic horizontal situation indicator
EIA Electrical Institute of America
EICAS engine indication and crew alert system
EIPI extended initial protocol identifier
EIRP earth incident radiated power
EIRP effective isotropic radiation power
EISA extended industry standard architecture
ELMS electrical load management system
eLORAN enhanced long range aid to navigation
ELOS equivalent level of safety (U.S. Army)
EMATS endurance management air traffic system
EMD engineering, manufacturing and development
ENOC engineering network operations center
EOC emergency operations center (U.S. Army)
EO DAS electro-optical distributed aperture system
EOLA European pre-operational data link applications
EPCS engine propulsion control system
EPLD electronically programmable logic device
EPLRS enhanced position location and reporting system
EPR environmental protection requirements (Europe)
EQTG electronic qualification test guide
ERA Environmentally Responsible Aviation program (AIA)
ERAM En Route Automation Modernization
ERAST environment research aircraft and sensor technology
ERMP extended range multi purpose
ERPDU error protocol data unit
ERP PDU echo replay protocol data unit
ERQ PDU echo request protocol data unit
ESAI electronic standby attitude indicator
ESAS electronic situation awareness system
ESAS enhanced situational awareness system
ESDS electrostatic discharge and soldering
ESID engine and system indication display
ESIS electronic standby instrument system
ESIS engine and system indication system
ETA estimated time of arrival
ETAS enhanced TRACON/tower automation system
ETB end of block (ASCII/IA5 character)
ETC estimated time of completion
ETD estimated time of departure
ETMS enhanced traffic management system
ETNO European Telecommunications Network Operators
ETP equal time point (halfway there, by time)
ETRC expected taxi ramp clearances
ETVS enhanced terminal voice switch
EUAFS enhanced upper air forecast system
EUPS external uninterruptible power supply
EURET European research on transport systems
EUROCAE European Organization for Civil Aviation Equipment (European equivalent of RTCA)
EUROCONTROL European Organization for the Safety of Air Navigation
eVTOL electric vertical take-off and landing (eVTOL) aircraft
EWIS electrical wiring interconnection system
EZAP enhanced zonal analysis procedures
F&E facilities and equipment
FAA Federal Aviation Administration (U.S.)
FAA/EURO FAA/Eurocontrol R&D committee
FAB-T family of advanced beyond-line-of-sight terminals
FACT future airport capability task
FADEC full authority digital engine/electronic control
FAMIS full aircraft management/inertial system
FANS Future Air Navigation System (ICAO)
FAROA Final Approach Runway Occupancy Awareness
FAST final approach spacing tool
FBCB2 Force XXI Battle Command Brigade and Below
FCC Federal Communications Commission (U.S.)
FCDC flight critical direct current
FCL flight crew licensing (EASA)
FCM future concepts for maintenance
FCMA FANS Central Monitoring Agency
FCS future concepts for simulators
FDAF flight data acquisition function
FDAU flight data acquisitions unit
FDB flight plan data bank
FDDI fiber distribution data interface
FDE fault detection and exclusion
FDEP flight data entry panel
FDI fault detection and isolation
FDIMU flight data interface management unit
FDIO flight data input/output
FDMA frequency division multiple access
FDMS flight deck merging and spacing
FDPS flight data processing system
FDRS flight data recorder system
FEATS Future European Air Traffic System
FERNS Far East Radio Navigation Service
FIAO flight inspection area office
FIFO first in, first out
FIX position in space usually on aircraft’s flight plan
FLEX flexibility in the terminal environment
FltWinds flight and weather information and decision support
FMAC Frequency Management Advisory Council
FMC flight management control/computer
FMC field programmable gate array mezzanine card
FMC future concepts for maintenance
FMCDU flight management control and display unit
FMCF flight management computer function
FMCS flight management computer system
FMEA failure mode and effects analysis
FMGC flight management guidance computer
FMGEC flight management guidance envelope computer
FMS-ATM Flight Management System-Air Traffic
FMSG Frequency Management Study Group (ICAO)
FMST flight management system trainer
FNPRM further notice of proposed rulemaking
FODA flight operations data assurance
FONSI finding no significant (environmental) impact
FOQA flight operational quality assurance
FOS fiber optics subcommittee (AEEC)
FOSA flight operator surface application
FOWG Fiber Optics Working Group (Naval Air Systems Command)
FPGA field programmable gate array
FQIS fuel quality indicating system
FQPU fuel quality processor unit
FRAD frame relay access device
FRCS flight recorder configuration standard
FRED flight recorder electronic documentation
FRP Federal Radionavigation Plan (U.S.)
FRPA fixed reception pattern antenna
FSAS flight service automation system
FSDO Flight Standards District Office (FAA)
FSEMC Flight Simulator Engineering and Maintenance Conference
FSEU flap slat electronics unit
FT/ADIRS fault tolerant/air data inertial reference system
FTPP fault tolerant power panel
FUE first unit equipped (U.S. Army)
FUSE family of unmanned systems experiments (U.S. Army)
FVHF future VHF system study (Eurocontrol)
G/A ground/air or ground-to-air
GACS genetic ATN communications service
GAIT ground-based augmentation and integrity technique
GAMA General Aviation Manufacturers Association
GAO Government Accountability Office (U.S.)
GATM global air traffic management
GAViS general aviation vision system
GBSAA ground-based sense and avoid
GCAS ground collision avoidance system
GCC ground cluster controller (ACARS)
GDLP ground data link processor
GDOP geometric dilution of precision
GEO geosynchronous/geostationary earth orbit
GFSK Gaussian frequency shift keying
GGTFM ground-ground traffic flow management
GIB global navigation satellite system integrity broadcast
GIC global navigation satellite system integrity channel
GIOVE-A Galileo In-Orbit Validation Experiment-A
GIVE grid inospheric vertical error
GL ground location (ACARS/AFEPS)
GLNS GPS landing and navigation system
GLONASS Global Navigation Satellite System (Russia)
GMDS ground mobile data service
GMTI ground moving target indicator
GNSS global navigation satellite system
GoMATS Gulf of Mexico advanced traffic surveillance
GOSIP government open systems interconnection profile
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
GPRS general packet radio services
GPWC ground proximity warning computer
GPWS ground proximity warning system
GRAS ground-based regional augmentation system
GRIP gridded binary (National Weather Service model output)
GSC ground station controller (ACARS)
GSIF ground station information frame
GSMS ground station management system
GWDS graphic weather display system
HAATA Houston Area Airspace Transition System
HADDS Host Air Traffic Management Data Distribution System
HARS high altitude route system
HART heterogeneous airborne reconnaissance teams (U.S. Army)
HAT height above touchdown zone
HDLC high-level data link control
HDLMS hybrid data link management system
HDOP horizontal dilution of precision
HEMS helicopter emergency medical services
HERF high-energy radio frequency (or energy radiated fields: dense)
HFACS human factors analysis and classification system
HFDR high frequency data radio
HFNPDU high frequency network protocol data unit
HFOM horizontal figure of merit
HFSG human factor study group
HFSNL high frequency subnetwork layer
HFWG human factors working group
HITL human in the loop
HITS highway in the sky
HLCS high lift control system
HMOS high-density metal oxide semiconductor
HMS handheld manpack and small form fit
HMSD Helmet Mounted Sight & Display
HOCSR host/oceanic computer system replacement
HOTAS hands on throttle and stick
HPSOV high pressure shutoff valve
HS-DSAD high speed digital service access device
HSIT hardware and software integration test
HSRP hot standby routing protocol
HUMS health and usage monitoring system
HVPS high voltage power supply
Hz Hertz (cycles per second)
I&TE integration and test engineering
IAA incident awareness and assessment
IACSP international aeronautical communications service provider
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
IATA International Air Transport Association
IBAC International Business Aviation Council
ICAO International Civil Aviation Organization
ICAO IFPP ICAO Instrument Flight Procedures Panel
ICAO OCP ICAO Obstacle Clearance Panel
ICARD ICAO five-letter name code & route designator
ICAW Instructions for Continued Airworthiness (FAA)
ICCAIA International Coordinating Council of Aerospace Industries Association
ICD interface control document/drawing
ICMP Internet control message protocol
ICNIA integrated communications, navigation and identification avionics
ICSS integrated communication switching system
IDEN integrated digital enhanced network
iDMU integrated data management unit
IEC IAPS environmental control module
IEEE Institute of Electrical and Electronics Engineers
IFALPA International Federation of Airline Pilots Associations
IFASS integrated system for surveillance and radio transmission
IFATCA International Federation of Air Traffic Controllers Associations
IFE&C in-flight entertainment and connectivity
IFF identification, friend or foe
IFIS integrated flight information system
IFPS integrated initial flight plan processing system
IFRB International Frequency Registration Board
IGES initial graphic exchange specification
IGES intermediate ground earth station
IGIA Interagency Group on International Aviation
IHAS integrated hazard avoidance system
ILSP integrated logistics support plan
INMARSAT International Maritime Satellite Organization
INMS integrated network management system
INTELSAT International Telecommunications Satellite Organization
InterNIC Internet Network Information Center
IO information operations (U.S. Army)
IOT&E initial operational test and evaluation
IPACG Informal Pacific ATC Coordination Group
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
IRR internal rate of return
ISA Instrument Society of America
ISDN integrated services digital network
ISDOS information system design and optimization system
ISDU inertial system display unit
ISIS integrated sensor is structure
ISMS in-flight safety monitoring system
ISO PA ISO protocol architecture
ISR intelligence, surveillance and reconnaissance
ISSS initial sector suite system/subsystem
ITAR International Traffic in Arms Regulations
ITSE integrated test and support environment
ITWS integrated terminal weather system
IUPS internal uninterruptible power supply
IVSI instantaneous vertical speed indicator
J-UCAS joint unmanned combat air systems
JAR-OPS Joint Aviation Regulations Operations
JCAB Japanese Civil Aviation Bureau
JCAT Joint Combat Assessment Team
JFET junction field effect transistor
JFEX Joint Expeditionary Force Experiment
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 Development Office (U.S.)
JPEO Joint Program Executive Office
JRANS Japanese regional air navigation system
JSTeF JTRS Science and Technology Forum
JSAT joint system acceptance test
JTAG Joint Test Action Group
JTIDS joint tactical information distribution system
JTRS joint tactical radio system
JUAS COE Joint Unmanned Aircraft System Center of Excellence (U.S. Army)
JVMF joint variable message format
KARI Korea Aerospace Research Institute
Kgls kinematic GPS landing system
KHz kilohertz (1000 cycles per second)
LAAS local area augmentation system
LACAC Latin American Civil Aviation Commission
LADGPS local area differential GPS
LAGPS local area global positioning system
LAHSO land and hold short operation
LAIRCM large aircraft infrared countermeasures
LAM levels of avionics maintenance
LAPB link access protocol, balanced
LASER light amplification by simulated emission of radiation
LBA Luftfahrt-Bundesamt (German equivalent of FAA)
LDCS local departure control system
LDGPS local area differential global positioning satellite
LDOC long distance operational control
LDRCL low density radio-communications link
LIDAR light detection and ranging
LINCS long-haul/leased interfacility national airspace communications system
LISN line impedance stabilization network
LLWAS low-level wind shear alert system
LODA letter of design approval (FAA)
LOPA layout of passenger accommodations
LPDU link protocol data unit
LPV localizer performance with vertical guidance
LRF/D laser range finder/designator
LRIP low rate initial production
LSAS longitudinal stability augmentation system
LSAT life support for trauma and transport (U.S. Army)
LS-DSAD low speed frame relay service access device
LS-FRAD low speed frame relay access device
LSP link state protocol data unit
LVDT linear voltage differential transducer
LVPS low voltage power supply
M2K Mobility 2000 (U.S. Air Force)
M-SNDCF mobile-subnetwork dependent convergence function
M-TADS Modernized Target Acquisition and Designation Sight
M/ASI mach/airspeed indicator
M/S meters per second
M&S merging & spacing
MAA maximum authorized IFR altitude
MAB Military ATM Board (Europe)
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 mean administrative and logistics delay time
MALSR Medium-Intensity Approach Lighting System with Runway Alignment Indicator
MANPADS man portable air defense system
MARSA military assumes responsibility for separation
MASPS minimum aviation system performance standard
MBER minimum bit error rate
MCAP Manned/Unmanned Common Architecture Processor
MCDP maintenance control display panel
MCDU multifunctional control display unit
MDA Missile Defense Agency (U.S.)
MDAH minimum descent altitude/height
MDAU maintenance data acquisition unit
MDCRS Meteorological Data Collection and Reporting Service
MDMP military decision making process (U.S. Army)
MEA minimum en route altitude
MEARTS Microprocessor En Route Automation Radar Tracking System
METAR meteorological aviation routine weather report
METL mission essential task list (U.S. Army)
METOC meteorological and oceanographic condition
MFCP multifunction control display panel
MFDUA miscellaneous flight data acquisition unit
MFIT mean fault isolation time
MGSCU main gear steering control unit
MHRS magnetic heading reference system
MicroEARTS Micro Enroute Automated Radar
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 display unit
MILS multiple independent levels of security
MIPS management interface protocol specification
MIPS million instructions per second
MMIC monolithic microwave integrated circuit
MMS metering, merging and spacing
MMSI miniature munitions system interface
MNCID management network category interaction diagram
MNPS minimum navigation performance specification
MOCA minimum obstacle clearance altitude
MOPR minimum operational performance requirements
MOPS minimum operational performance standards
MOQA maintenance operations quality assurance
MOSA modular open systems approach
MOSP multi-mission optronic stabilized payload (U.S. Army)
MPEG Moving Picture Expert Group
MPCU multiport protocol converter unit
MPDS mobile packet data service
MPEL maximum permissible exposure level
MPP materials, processes and parts
MPS maintenance processor system/subsystem
MRO maintenance, repair and overhaul
MSCP mobile satellite service provider
MSP Mode S specific protocol
MSSR monopulse secondary surveillance radar
MSSS Mode S specific services
MTBF mean time between failure
MTBO mean time between outages
MTBR mean time between removal/repairs
MTBUR mean time between unscheduled removal
MTBUR mean time between unit replacements
MTM module test and maintenance
MTMBIU MTM bus interface unit
MTTDA mean time to dispatch alert
MTTF mean time to failure
MTTM mean time to maintenance
MTTMA mean time to maintenance alert
MTTR mean time to repair
MTTRS mean time to restore service
MTTUR mean time to unscheduled removal
MUOS Mobile User Objective System
MVMC marginal visual meteorological conditions
MWARA major world air route area
N-UCAS Navy-Unmanned Aerial Combat System
NACp navigation accuracy category for position
NACv navigation accuracy category for velocity
NACA National Advisory Committee for Aeronautics NCAR National Center for Atmospheric Research
NADIN national airspace data interchange network
NADIN II NADIN packet switch
NAILS national airspace integrated logistics support
NAPA National Academy of Public Administration
NAOMS National Aviation Operational Monitoring Service
NAPRS national airspace performance reporting system
NAS National Airspace System (FAA)
NASA National Aeronautics and Space Administration
NASPALS National Airspace System Precision Approach and Landing System (FAA)
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
NAVAIR Naval Air Systems Command
NAVSEA Naval Sea Systems Command
NBAA National Business Aviation Association
NC3A NATO Consultation, Command and Control Agency
NCATT National Center for Aircraft Technician Training
NCOIC Network Centric Operations Industry Consortium
NCOW net-centric operations and warfare
NEAN North European ADS Network
NEAP North European CNS/ATM application project
NELS Northwest European Loran System
NEMA National Electrical Manufacturers Association (U.S.)
NEPA National Environmental Policy Act
NESACC North, East & Southern area control centers for China
NESDIS national environmental satellite data and information service
NEXCOM Next Generation Air/Ground Communications System
NextGen Next Generation Air Transportation System (U.S.)
NGIWG NextGen Implementation Plan Work Group
NGIWP NextGen Implementation Plan Work Plan
NGJ NextGen Jammer (U.S. Navy)
NIAC NAS Information Architecture Committee (FAA)
NICE NAT implementation management group cost effectiveness
NICE network integrated cabin equipment
NIEC NextGen Integration and Evaluation Capability
NIMA National Imagery and Mapping Agency (U.S.)
NIMS NAS infrastructure management system
NIRV network interface router VHF datalink
NISC NAS information security coordination
NIST National Institute of Standards and Technology
NIU North American ISDN User Forum (NIST)
NLR Netherlands National Aerospace Laboratory
NMCCD network management category class diagram
NMCD network management category diagram
NMIRS network management interface requirements specification
NNEW NextGen Network Enabled Weather (FAA)
NOAA National Oceanic and Atmospheric Administration (U.S.)
NOCAR North Atlantic oceanic concept and requirements
NOCC National Operational Control Center
NOI notice of inquiry (FCC)
NORAD North American Aerospace Defense Command
NOTUS notice to users (ARINC)
NPDU network protocol data unit
NPIAS national plan for integrated airport systems
NPRM notice of proposed rule making
NSA National Security Agency (U.S.)
NSAP network service access point
NSDU network service data unit
NSEU neutron single event upset
NSSL National Severe Storms Laboratory (U.S.)
NTDA NEXRAD Turbulence Detection Algorithm
NTIA National Telecommunications and Information Administration (U.S.)
NTSB National Transportation Safety Board (U.S.)
NTST National Television Systems Committee
NUCp navigation uncertainty category for position
NVCD night vision cueing and display
NVIS night vision imaging system
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
OASIS operational area satellite information system
OASIS operational and supportability implementation system
OASIS organic airborne and surface influence sweep
OATS orbit and attitude tracking system
OCIG Oceanic Communications Improvement Group
OCTAS obstacle cable and terrain avoidance system
ODAPS oceanic display and planning system
ODIAC operational requirements for ATM air/ground data communications (Eurocontrol)
ODID operational display and input development
ODIN observe, detect, identify, neutralize
OEP Operational Evolution Partnership (FAA)
OES Office of Emergency Services
OFDM orthogonal frequency division multiplexing
OFDPS oceanic flight data processing system
OIG Office of Inspector General (U.S.)
OLAN onboard local area network
OMB Office of Management and Budget (U.S.)
ONR Office of Naval Research (U.S.)
OODA observe, orient, decide and act
OOOI out/off/on/in
OPAS overhead panel ARINC 629 system
OPBC overhead panel bus controller
OSCAR Orbiting Satellite Carrying Amateur Radio
OSD Office of the Secretary of Defense (U.S.)
OSDS oceanic systems development support
OSED operational service and environment definition
OSEIC operational service and environment information capture
OSGCS one system ground control station
OSI open systems interface/interconnection
OSJTF Open Systems Joint Task Force (U.S.)
OSPF open shortest path first
OSPGCS one system portable ground control station (U.S. Army)
OSRVT One System Remote Video Terminal
OTA Office of Technology Assessment (U.S.)
OT&E operational test and evaluation
OTFP operational traffic flow planning
OTM-4D Oceanic Trajectory Management-4D
OTP Office of Telecommunications Policy (U.S.)
P2FEP Preliminary Eurocontrol test of air/ground datalink (PETAL)-II front-end processor
P3I preplanned product improvements
P/RST press to reset
PABX private automatic branch exchange
PACIS passenger address and communication interphone system
PAMRI peripheral adapter module replacement item
PANS-OPS procedures for air navigation services-aircraft operations
PANYNJ Port Authority of New York and New Jersey
PAPD precise and accurate positioning device
PAPI precision approach path indicator
PARTNER Partnership for Air Transportation Noise and Emissions Reduction
PATS portable avionics test solution
PAVES programmable audio video entertainment system
PAWES performance assessment and workload evaluation
PBD place bearing/distance (waypoint)
PBX public/private branch exchange
PCI peripheral component interface (32-bit local bus)
PCMIA Personal Computer Memory Card Interface Association
PDCU panel data concentrator unit
PDDI product definition data interface
PDM predefined controller text message
PDOP position dilution of precision
PECT peer entity contact table
PEO C3T Army Program Executive Office Command, Control and Communications Tactical
PERT program evaluation and review technique
PETAL preliminary Eurcontrol test of air/ground data link
pFAST passive final approach spacing tool
PFCS primary flight control system
PHARE Program for Harmonized ATM Research in Europe (Eurocontrol)
PICMG PCI Industrial Computer Manufacturers Group
PIA performance, integrity and availability
PICS protocol implementation conformance statements
PLBT personal locator beacon and voice transceiver
PMAT portable maintenance access terminal
PMOS p-type metal oxide semiconductor
PMP project/program management plan
PNCS performance navigation computer system
PNR point of no return
POCC project operations control center
POH pilot’s operating handbook
POSIX portable operating system interface
POTS plain old telephone system/service
PPDU physical layer protocol data unit
PRM-A Precision Runway Monitor-Alternate (FAA)
PRSOV pressure regulating and shutoff valve
PSDN packet switched data network
PSEU proximity sensor electronic unit
PSL/PSA problem statement language
PSPL preferred standard parts list
PSSA preliminary system safety assessment
PSTN public switched telephone network
PTAN precision terrain aided navigation
PTSD production test specification document
PXI PCI extensions for instrumentation
QFE Q code, field elevation pressure
R-CDL Radar Common Data Link
R&D research and development
R&M reliability and maintainability
R&PWG Requirements and Planning Work Group (FAA)
RAAF Royal Australian Air Force
RAAS runway awareness and advisory system
RAC-GAT Russian/American Coordinating Group for Air Traffic Control
RAE Royal Aircraft Establishment (Farnborough)
RAeS Royal Aeronautical Society (U.K.)
RAF Royal Air Force (U.K.)
RAID redundant arrays of independent disks
RAIM receiver autonomous integrity monitoring
RALA request automatic line adapter
RAM-T reliability, availability, maintainability and testability
RAMICS rapid airborne mine clearance system
RAMS reliability, availability, maintainability, sustainability
RAPT regional airspace procedures team
RAS route area statistics (IATA)
RATMP required air traffic management performance
RCAT Reconfigurable Cockpit and Avionics Testbed
RCR routing and circuit restoral
RCSU remote control and status unit
RC&W rack connectors and wiring
RDARA regional domestic air route area
RDDMI radio digital distance magnetic indicator
RDSS radio determination satellite system
RDT&E research, development, test and evaluation
RE&D research, engineering and development
REDAC Research, Engineering and Development Advisory Committee (FAA)
REFT remote unit reference transmitter (FAA)
RERP Reliability Enhancement and Re-engining Program
RFA Regulatory Flexibility Act (U.S.)
RFMS rotorcraft flight manual supplement
RGCSP Review of the General Concept of Separation Panel (ICAO)
RHSM reduced horizontal separation minima
RIN Royal Institute of Navigation (U.K.)
RISC reduced instruction set computer
RLE response on link establishment
RM&A reliability, maintainability and availability
RMCDE radar message conversion and distribution equipment
RMMS remote maintenance monitoring system
RNP AR RNP authorization required
RNP SAAAR RNP Special Aircrew and Aircraft Authorization Required
ROC rest of operational capability
ROIP radio over Internet protocol
ROM rough order of magnitude
RPAT RNP Parallel Approach Transmission
RPDE rapid preliminary development effort
RPOA Recognized Private Operation Agency
RSDP reliable sequencing delivery-confirmation protocol
RSSI received signal strength indicator
RSTA reconnaissance, surveillance, target acquisition
RTA required time of arrival
RTCA formerly Radio Technical Commission for Aeronautics
RTCM Radio Technical Commission for Maritime Services
RTOS real time operating system
RTR remote transmitter receiver site
RTSP required total system performance
RVFP RNAV visual flight procedures
RVSM reduced vertical separation minimum
S&A see and avoid
SAAAR special aircraft and aircrew authorization required
SAASM selective availability/anti-spoofing module
SAASM/EGI SAASM/embedded GPS inertial system
SADT software architecture design team
SAE Society of Automotive Engineers
SAFIR systems aid for integration and fault reporting
SAI system architecture and interfaces
SAI System Architecture and Interfaces Subcommittee (AEEC)
SAMM surface area movement management
SAMPE Society for the Advancement of Materials and Process Equipment
SARPS standards and recommended practices (ICAO)
SASS surveillance analysis support system (Eurocontrol)
SAT systems and acceptance testing
SBS Surveillance and Broadcast Services
SCA software communications architecture
SCAP Security Certification and Accreditation Procedures (U.S. Department of Defense)
SCAP standard computerized airplane performance
SCCI system controller and cockpit indicator
SCPC single carrier per channel
SCSI small computer system interface
SCT Surface Collaborative Decision Making Team
SDD system/software design document
SDD system development and demonstration
SDLC synchronous data link control
SDRAM synchronous dynamic random access memory
SECAM sequential color with memory
SEMP system engineering management plan
SESAR Single European Sky Air Traffic Management
SETA system engineering and technical assistance SE-Vision synthetic-enhanced vision
SFDF subsystem fault detection function
SFE supplier (or seller)-furnished equipment
SI&T software integration and test
SICAS secondary surveillance radar improvements and collision avoidance systems
SINCGARS single-channel ground and airborne radio system
SIPRNET secret internet protocol route network (U.S. Army)
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
SITR system integration test report
SITS Security Integrated Tool Set
SKPP separation kernels in environments
SLoC source lines of code
SLUC system level use case
SMART standard modular avionics repair and test
SMC Space and Missile Systems Center (Air Force)
SMDS switch multimegabit data service
SMGCS surface movement guidance and control systems
SMR simulator maintainability and reliability
SMUG stores management upgrade system
SNDCF SN dependent convergence function
SNICF SN independent convergence function
SNMP simple network management protocol
SNPA SN point of attachment
SNPDU SN protocol data unit
SNPRM supplemental notice of proposed rulemaking
SNSDU SN service data unit
SOC system on a chip
SOIA simultaneous offset instrument approach
SOIT satellite operational implementation team
SON statement of operational need
SOSCOE System-Of-Systems Common Operating Environment
SPAR Survivability Planner Associate Re-router
SPEAR system performance evaluation and analysis reporting
SPCR system problem/change report
SPI-IR surveillance performance and interoperability implementing rule
SPICE STANS preparation integrator for CNS/ATM environment (Eurocontrol)
SPM software programmer’s manual
SPR safety and performance requirements
SPTF Spectrum Policy Task Force (FCC)
SQAP software quality assurance plan
SRAM static random access memory
SRR system/software requirements review
SRTM shuttle radar topography mission
SSAC source selection advisory committee
SSAP strategic safety action plan
SSDD system/segment design document
SSE safety, security and environmental performance
SSEB source selection evaluation board
STA scheduled time of arrival
STANS simulation for a total air navigation system (Eurocontrol)
STAR standard terminal arrival route
STARS standard terminal automation replacement system (FAA)
STDMA self-organized time division multiple access
STDMA synchronized time division multiple access
STIU satellite telecommunications intermediate unit
STMS surface traffic management system
STOL short take-off and landing
STOVL short take-off/vertical landing
STVS small tower voice switch
STUAS small tactical unmanned aircraft system
SUPPS regional supplementary procedures (ICAO)
SWAP severe weather avoidance procedure program
SWaP size, weight and power
SWARM Smart Warfighting Array of Reconfigurable
SWIM System Wide Information Management (FAA)
SWIT software integration and test
SWTRR software test readiness review
SYSCAT-B system category-B (FAA message format)
T-PED transmitting portable electronic device
T&E test and evaluation
TADSS training aides, devices, simulators, simulations
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
TASS terminal air surveillance system
TAWS terrain avoidance warning system
TBFM time based flow management
TCAD traffic collision alerting device
TCAS traffic alert collision avoidance system
TCAS II traffic alert collision avoidance system II
TCDL tactical common data link
TCP/IP TCP/Internet protocol
TDF training device facility requirements
TDLS tower data link services (system)
TDMA time division multiple access
TDOA time difference of arrival
TDST tower data services terminal
TDWR terminal Doppler weather radar
TEDS transducer electronic data sheet
TERA Terminal Enhancements for RNAV ATC
TERPS terminal en route procedures
TES trials end system (for ATN)
TFDM tower flight data manager/management
TFM-M Traffic Flow Management Modernization (FAA)
TFMS traffic flow management system
TFTP trivial file transfer protocol
TG4 maximum time between GSIF’s timer
TG5 maximum link overlap timer TGT target
TIS-B traffic information service-broadcast
TL terminal location (ACARS/AFEPS)
TLS target level of safety
TMC test, monitor and control
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
TOFT tactical operational flight trainer
TO/GA take off/go around
TOR terms of reference (ICAO/FAA)
TPAW turbulence prediction and warning system
TPDU transport protocol data unit
TRACON terminal radar approach control
TRADOC Training and Doctrine Command (U.S. Army)
TRNS terrain referenced navigation system
TSA Transportation Security Administration (U.S.)
TSAP transport service access point
TSAT Transformational Satellite Communications System
TSB Transportation Safety Board (Canada)
TSDP technical support and data packages
TSDU transport service data unit
TSG technical standards and guidelines
TSO technical standard order (FAA)
TSOA technical standard order authorization
TSP tactical signal intelligence payload
TSS technology support and services
TSPD technical support and data package
TSTM time source transition module
TTNT tactical targeting networking technology
TTP tactics, techniques and procedures
TUAS tactical unmanned aerial system
TUAV tactical unmanned aerial vehicle
TWDL two-way data link communications
TWIP terminal weather information for pilots
UART universal asynchronous receiver transmitter
UASTB Unmanned Aircraft System Training Battalion
UATP universal air travel plan
UCAV unmanned combat aerial vehicle
UGCS universal ground control station
UGDT universal ground data terminal
ULWG upper layer working group
UMTS universal mobile telecommunications system
UPRM universal platform resource management
URET user request evaluation tool
USAACE United States Army Aviation Center of Excellence
USAF U.S. Air Force
USCG U.S. Coast Guard
USSOCOM United States Special Operations Command
VITA VMEbus International Trade Group
V/ULOS versions of the HaveQuick and VHF/UHF
V&V verification and validation
VASI visual approach slope indicator
VCDU video control display unit
VDGS visual docking guidance system
VDL4 VHF Data Link Mode 4
VFOM vertical figure of merit
VG/DG vertical gyro/directional gyro
VHSIC very high speed integrated circuit
VLSI very large scale integration
VME versa module Eurocard bus
VME VHF management entity (VMEbus)
VMECC versa module Eurocard card cage
VNMS VDLM2 network management system
VNO maximum structural cruising speed
VOIP voice over Internet protocol
VOR VHF omnidirectional radio range
VSAT very small aperture terminal
VSCS voice switching and control system
VSD VDL specific DTE address
VSRS voice switch replacement system
VSTC validation of supplemental type certificate
VSWR voltage standing wave radio
VTAM virtual telecommunications access method
VTAS voice, throttle, and stick
VTOL vertical take-off and landing
VUIT-2 Video from Unmanned Aerial Systems
for Interoperability Teaming Level II
WAAS wide area augmentation system
WACS wireless airport communication system
WADGPS wide area differential GPS
WAFC world area forecast center
WARC World Administrative Radio Conference
WARP weather and radar processor
WASP wireless access service point
WATRS west Atlantic route structure
WDM LAN wavelength division multiplexed local area network
WIP wide area augmentation system integrity panel
WIPPS wide-body integrated platform protection system
WJHTC William J. Hughes Technical Center (FAA)
WMO World Meteorological Organization
WMSCR weather message switching center replacement
WORM write-once/read many (optical disk technology)
WQAR wireless quick access recorder
WSDDM weather support for deicing decision-making
WTMA Wake Turbulence Mitigation for Arrivals
WTMD Wake Turbulence Mitigation for Departures
WWW/E who, what, where/performance evaluation (RTCA)
XMC switched fabric mezzanine card
XTRA X-ban thin radar aperture
For additions or corrections to the online version and the next print edition of the Avionics International Magazine Aerospace Acronym & Abbreviation Guide, contact the editor: Jessica Reed at [email protected]