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AHD
2 Attitude/heading computer.
AHD Ahead.
AHE Aerospace Hardware Exchange.
Ahead 1 Attitude, heading and rate of turn indicating
system.
2 Advanced hit efficiency and destruction, programmable
gun submunition.
AHF Aircooled, heavy fuel.
AHFM Alternate [ie, alternative] or advanced h.f.
material [Northrop Grumman].
AHI Aviation Health Institute (UK).
AHIP Army helicopter improvement program (USA).
AHM 1 Anti-helicopter mine.
2 Airplane health management.
3 Aircraft heavy maintenance.
AHMOS Active health-mornitoring system.
AHMS Advanced health management system.
AHWS Armed-helicopter weapon system.
AHMR Aircraft health-monitor recorder.
AHP Army heliport (USA).
AHQ Air headquarters.
AHRS Attitude/heading reference system pronounced
A-hars.
AHRU Altitude/heading reference unit.
AHS International Previously the American Helicopter
Society [office, Alexandria, VA22314] (US).
AHSA The Aviation Historical Society of Australia
[office, South Melborne].
AHSNZ Aviation Historical Society of New Zealand,
Inc. [office, Wellington].
AHSW Aural high-speed warning.
AHT 1 Automated hover trainer.
2 The Airship Heritage Trust [office, London SE3 9EL]
(UK).
AHTR Auto horizontal-tail retrimming after landing.
AHU Aircraft Holding Unit, for military aircraft
temporarily surplus to requirements; also said to mean
Aircrew HU.
AHWG Aviation Health Working Group (UK
Parliamentary Committee 2002).
AI 1 Airborne interception (radar).
2 Artificial intelligence.
3 Air-data/inertial.
4 Attitude indicator.
5 Alternative interrogator.
AIA 1 Aerospace Industries Association of America
Inc. [Washington, DC20005–3924] (US).
2 Associazione Industrie Aerospaziali [see AIAD].
3 Associazione Italiana di Aerotechnica.
4 Académie Internationale d’Astronautique.
5 Atelier Industriel de l’Air (F).
6 Air Intelligence Agency (USAF, Lackland AFB,
established 1 October 1993).
7 Advanced-information, or imagery, architecture.
8 Aviation Insurance Association (Hasbrouck Heights,
NJ).
AIAA 1 American Institute of Aeronautics and
Astronautics [office, Reston, VA20191–4344] (US).
2 Aerospace Industry Analysts Association (US).
3 Area of intense air activity.
AIAC Aerospace [previously Air] Industries Association
of Canada [office, Ottawa K1P 5Y7] (Canada).
AIACS Association of International Air Courier
Services [office, Leatherhead, Surrey] (UK).
AIFF
AIAD Associazione Industrie Aerospaziali e Difesa
[office, Rome 2001–00184] (Italy).
AIAEA All-India Aircraft Engineers Association.
AIAH Advanced integrated avionic, or aircrew, helmet.
AIANZ The Aviation Industry Association of New
Zealand, Inc. [General Aviation, office in Wellington]
(NZ).
AIB 1 Accidents Investigation Branch [from 1988
AAIB] (UK).
2 Aeronautical Information Bureau.
3 Airfield, or aerodrome, identification beacon.
AIBU Advanced interface blanker unit.
AIC 1 Aeronautical Information Circular (CAA).
2 Advanced industrial countries.
3 Air-inlet control[ler], or computer.
4 Aluminium/iron/cerium.
5 Automatic integrity check (MLS).
AICAA Associazione Italiana Costruttori Amatori
d’Aerei (homebuilders).
AICBM Anti-ICBM.
AICC Aviation Industry CBT Committee (Int.).
AICCA Australian International Cabin-Crew
Association.
AICES Association of International Air Courier and
Express Services (office UK).
AICGS Advanced imagery common ground station.
AICMA Association Internationale des Constructeurs
de Matériel Aérospatial.
AICQ Associazione Italiana Cultura Qualità [member
of IAQG].
AICS 1 Automatic inlet, or intake, control system.
2 Airborne integrated communications system.
3 Airborne wireless intercom system.
AID 1 Aeronautical Inspection Directorate (UK,
1913–).
2 Altered-item drawing.
3 Agency for International Development (US).
4 Airport information desk (FAA).
5 Accident/incident/deficiency.
AIDA 1 Associazione Italiana di Aerofilatelia
[philately]; office, I-20148 Milan] (Italy).
2 Aeronautical integrated data-exchange (EL adds
economy line).
3 Artificial-intelligence discrimination architecture.
AIDAA Associazione Italiana di Aeronautica e
Astronautica.
AIDC Air-traffic services interfacility data communications.
Aidews Advanced integrated defensive EW system.
AIDN Australian Industry & Defence Network.
Aids, AIDS 1 Airborne/aircraft/automatic/advanced
integrated data system/suite.
2 Acoustic-intelligence data system.
3 Aircraft intrusion detection system (temporary
parking area).
AIDU Aeronautical Information Documents Unit [for
military aircrew; address, RAF Northolt].
Aieda, AIEDA Association Internationale des Avocats
et Experts en Droit Aérien.
AIEF Air Intelligence Exploitation Facility (USAF).
AIEM Airlines International Electronics Meeting.
AIEU Aircraft integrated electronics unit.
AIEWS Advanced integrated EW suite (USN).
AIFF Advanced identification friend or foe.
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