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Atcare
2 Army Telecommunications Automation Program
(USA).
Atcare ATC analysis and recording environment.
Atcas 1 ATC administration system.
2 ATC automation system.
ATCC ATC centre/center (UK/US).
ATC clearance Authorization by ATC for purpose of
preventing collision between known aircraft for aircraft to
proceed under specified conditions in controlled airspace
(FAA).
ATCCC, ATC3 ATC Command Center (FAA).
ATCCTS 1 ATC communications training system.
2 ATC control-tower simulator.
ATCE Air training centre of excellence.
ATCEU ATC Evaluation Unit (Hurn, UK).
ATCGS ATC ground segment [of satellite link].
ATCI ATC investigation of airprox.
ATCMFT ATC multifunction trainer.
Atco, ATCO 1 ATC officer.
2 Air-taxi and commercial operator.
Atcom Aviation and Troop Command (USA).
ATCOMS, Atcoms ATC operations, or and operational,
management system[s].
ATCPA Air Taxi & Commercial Pilots Association
(office, Washington DC).
ATCPS ATC procedures simulator.
ATCPT ATC procedural trainer.
ATCR 1 Air Training Command Regulation[s]
(USAF).
2 ATC room[s].
ATCRBS ATC radar-beacon system (FAA).
ATCRS ATC radar simulator.
ATCRU ATC radar unit (UK).
ATCS 1 ATC Service (UK), or simulator.
2 Active thermal-control system, or subsystem.
3 Automated tower control system.
ATCSCC ATC System (originally Services) Command
Center (FAA, Herndon, VA).
ATCSS ATC signalling system (air/ground datalink
tested 1958 as alternative to voice).
ATCT ATC (14) tower; S adds simulator.
ATD 1 Actual time of departure.
2 Airline-, or aviation-, transmitted disease.
3 [translated] Aviation technical division (USSR, R).
4 Automatic threat detection; S adds system.
5 Applied Technology Directorate (USA).
6 Along-track distance.
7 Advanced-technology demonstrator.
ATDA Augmented target docking adaptor.
ATDC Automatic, or assisted, target detection and
classification.
ATDI Aviation Training and Development Institute
(IATA).
ATDL Advanced, or Army, tactical, or air-transport,
datalink (USA).
ATDMA Advanced time-division multiple access.
ATDRR Autonomous airborne tactical data radio
relay.
ATDS 1 Airborne tactical data system.
2 Air-turbine drive system.
ATDU Air Torpedo Development Unit (RAF Gosport
1940–46) later Helston, now defunct.
ATE 1 Automatic test equipment.
2 Aircraft test and evaluation (UK).
ATI
3 Actual time en-route.
4 Advanced technology and engineering (also AT&E).
5 Air traffic engineer [inspects and maintains navaids].
ATEC 1 Aviation Technician Education Council (US).
2 Automatic test-equipment complex.
3 Air[craft] Test & Evaluation Centre [Boscombe
Down, previously A&AEE] (QinetiQ].
Atecma, ATECMA Agrupación Técnica Española de
Constructores de Material Aeroespacial [E-280015
Madrid] (Spain).
Ategg, ATEGG Advanced turbine engine gasgenerator.
Atems, ATEMS Advanced threat-emitter simulator.
Atepsa Asociación Técnicos y Empleados de Protección
e Securidad a la Aeronavegación (Argentina).
ATER 1 Advanced triple ejector rack.
2 Air Test and Evaluation Review [MoD] (UK).
ATES Aircraft Test and Evaluation Sector
(Qinetic/DRA, Boscombe Down).
ATESS 1 Aerospace and telecommunications engineering
support services.
2 Advanced tactics and engagement simulation
subsystem.
ATF 1 Advanced tactical fighter.
2 Aviation turbine fuel.
3 Actual time of fall.
4 Amphibious task force.
5 Adaptive terrain-following.
6 Altitude test facility.
7 Air traffic flow.
8 Aerodrome, or airport, traffic frequency.
9 Air-transport force.
10 Anechoic test facility.
Atfero Atlantic Ferry Organisation (UK, 1940–42).
Atflir, Atfir, ATFLIR, ATFIR Advanced targeting
forward-looking IR.
ATFM Air traffic flow management; U adds unit.
ATFPS Air taffic flow planning system.
ATFS Authentic tactical flight simulator, or simulation.
ATG 1 Amphibious task group.
2 Air-traffic generator.
3 Adversary Tactics Group (USAF).
ATGS Air Tactical Group Supervisor, an experienced
firefighter who provides aerial C 2 and also feeds information
to the IC(8).
ATGW Anti-tank guided weapon.
ATH 1 Autonomous terminal homing.
2 Air-transportable hospital.
3 Automatic target handoff.
Athlete All-terrain hex-legged extraterrestrial explorer
(NASA).
athodyd Aero-thermodynamic duct. The essential
features are that it is open at both ends and has an internal
profile such that flow velocity inside is lower than the freestream
velocity, thus facilitating burning of fuel, or in
some other way adding eneregy. The term is generally
taken to be synonymous with ramjet.
Athos Airport tower harmonised controller system
(Euret).
A/THR Autothrottle mode.
ATHS Airborne, or automatic, target handover, or
handoff, system.
ATI 1 Air, or airline, transport instrument [standard
panel sizes].
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