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AMSA
5 Air [or aerospace, or aircraft] material specification.
6 Advanced missile system (USN).
7 Apogee and manoeuvring stage.
8 Automated message switch.
9 Airborne maintenance subsystem.
10 Avionics, or airspace, management system, or
service.
11 Altitude management [and alert] system.
12 American Material Standard.
13 American Meteorological Society [office, Boston,
MA02108] (US).
14 Automatic marking system, or subsystem.
15 Automatic meteorological system.
16 Apron management service.
17 Automated manifest system.
18 Aviation Manpower and Support (USMC).
19 Aircraft Maintenance Standards (CAA).
20 Aerospace Material Specification[s] (SAE).
AMSA Advanced manned strategic aircraft.
AMSAA Army Materiel Systems Analysis Activity
(USA).
Amsam Anti-missile SAM (1).
Amsar, AMSAR 1 Airborne multimode, or multirole,
or multipurpose, solid-state, active-array radar.
2 Airborne multifunction steerable-array radar.
Amsat Amateur radio-satellite organization [Silver
Spring, MD20910-4703] (Int.). Amsat UK, office,
Henfield BN5 9YB.
AMSC Automatic message-switching centre.
AMSD Aircraft Maintenance Standards Department
(CAA).
AMSE Automatic message-switching equipment.
AMSG Air Mobility Support Group (USAF).
AMSL, a.m.s.l. Above mean sea level.
AMSO Air Member for Supply and Organisation (UK,
WW2).
AMSR Advanced microwave scanning radiometer.
AMS(R)S Aeronautical mobile satellite (route) service.
AMSS 1 Advanced multi-sensor system (EW, SOJ,
AEW).
2 Aeronautical mobile satellite service [P adds panel].
3 Airborne mission-support system.
4 Automatic message-switching system (AFTN).
AMST Advanced medium STOL transport.
AMSTE Affordable moving surface-target engagement.
AMSU 1 Aircraft-motion sensor, or sensing, unit
[digital FCS].
2 Air-motor servo unit.
3 Advanced microwave sounding unit.
AMT 1 Accelerated mission test[ing].
2 Aircraft [or aviation] maintenance technician.
3 Advanced metal-tolerant tracker [or tracking
system].
4 Air maneuver [and] transport, C–130/C–17 capability
plus V/STOL (USA).
5 Association for Manufacturing Technology (US).
6 Aviation Maintenance Technology [Vincennes
University, IN 47591-0086] (US).
amt Amount.
AMTC Aerospace Medicine Training Centre.
AMTD 1 Aircrew maintenance-training device.
2 Adaptive moving-target detector, detection, or
device.
anaglyph
AMTE Adjusted megaton equivalent.
AMTI Airborne, or air, moving-target indicator, or
indication.
Amtorg Former organisation for importing and
licensing US products (USSR).
Amtos, AMTOS Aircraft-maintenance task-oriented
support [second S adds system].
AMTS 1 Adaptive marked-target simulator.
2 Aeronautical message transfer service.
3 Aerial, or air-to-air, missile target system.
AMTT See AMT (3).
AMU 1 Air mileage unit.
2 Astronaut maneuvering unit.
3 Aircraft maintenance unit; F adds facility.
4 Audio-, or avionics-, management unit.
5 Antenna-matching unit.
6 Auxiliary memory unit.
7 Air Mobility Unit (USAF).
AMUST Airborne manned/unmanned system technology;
-D adds demonstration.
AMUX Audio multiplexer.
AMW Air Mobility Wing (USAF).
AMWD Air Ministry Works Department [airfield and
building construction, formerly] (UK).
AMWM Aircraft maintenance wiring manual.
amyl Family of univalent hydrocarbon radicals, all
loosely C 5 H 11 , esp.: amyl acetate (banana oil) solvent and
major ingredient of aircraft dopes; and amyl alcohol, in
lacquers.
AN 1 Air navigation.
2 Prefix to designation codes of US military hardware
denoting “Army-Navy”; now rare, though code system
remains.
3 Airworthiness Notice.
4 [or A/N] alphanumeric.
A n Acceleration normal to flight path, usually along OZ
axis.
AN 2 Product of gas-turbine annulus area at turbine
rotor-blade mid-length and square of rotational speed.
ANA 1 Air Navigation Act.
2 Association of Nordic Aeroclubs (Int).
3 Association of Naval Aviation Inc. [53 chapters,
office Alexandria, VA] (US).
4 Aeroportos e Navegacao Aerea (Portugal).
ANAAA Association of N American Air Ambulances
[office, Blackwood, NJ] (US, Canada).
anabatic wind Wind blowing uphill as result of insolation
heating slope and adjacent air more than distant air
at same level.
ANAC, Anac 1 Automatic nav/attack control(s).
2 Civil aircraft certification authority (Brazil).
Anacna Associazione Nazionale Assistenti e Controllori
della Navigazione Aerea [office, I-00181 Rome]
(Italy).
anacoustic region Extreme upper level of atmosphere
(say, 100 miles above Earth) where mean free path too
great for significant propagation of sound.
ANAE Académie Nationale de l’Air et de l’Espace
[Toulouse] (F).
ANAEM Aircraft noise and aviation emissions mitigation.
anaglyph Picture, generally photographic but often
print-out from some other system, comprising stereoscopic
pairs of images, one in one colour (eg red) and other
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