|
|
| A |
|
| 3D,
4D |
three-
or four-dimensional |
| 4096 CODE |
the
octal base, four-digit code used between framing pulses of a reply to
identify an aircraft or for general use and emergency codes (XPD) |
| A |
ampere(s) |
| A |
autotuned
navaid |
| AAC |
aeronautical
administration communications |
| AAC |
airline
administrative communications |
| AAL |
above
aerodome level |
| AAMP |
advanced
architecture microprocessor |
| AATT |
advanced
aviation transportation technology |
| AAS |
advanced
automation system (FAA) |
| A/B |
autobrake |
| ABC |
automatic
brightness control |
| A-BPSK |
aviation
binary phase shift keying |
| AC |
advisory
circular |
| AC |
alternating
current |
| A/C |
aircraft |
| ACAC |
air-cooled
air cooler |
| ACARS |
aircraft
communications addressing and reporting system |
| ACAS |
airborne
collision avoidance system (FAA) |
| ACC |
active
clearance control |
| ACC |
area
control center |
| ACD |
automatic
conflict detection |
| ACE |
actuator
control electronics |
| ACE |
advanced
certification equipment |
| 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 |
apron
control unit |
| ACU |
autopilot
control unit |
| ACU |
antenna
control unit |
| AD |
airworthiness
directives (FAA) |
| A/D |
analog-to-digital |
| ADA |
a
computer programming language |
| ADC |
air
data computer |
| ADF |
automatic
direction finding |
| ADI |
attitude
direction indicator |
| ADIRS |
air
data inertial reference system |
| ADIRU |
air
data inertial reference unit |
| ADL |
aeronautical
data link |
| ADLP |
aircraft
data link processor (Mode S) |
| ADLP |
airborne
data link protocol |
| ADM |
air
data module |
| ADMS |
airline
data management system |
| ADP |
air
driven pump |
| ADR |
address |
| ADR |
alternative
dispute resolution |
| ADRAS |
airplane
data recovery and analysis system |
| ADS |
automatic
dependent surveillance |
| ADS |
air
data system |
| ADS-A |
automatic
dependent surveillance- addressed |
| ADSA |
automatic
dependent surveillance- automation |
| ADS-B |
automatic
dependent surveillance- broadcast |
| ADSEL |
address
selective |
| ADSP |
automatic
dependent surveillance panel |
| ADSSG |
ADS
Study Group (ICAO) |
| ADSU |
automatic
dependent surveillance unit |
| AECU |
audio
electronic control unit |
| AED |
ALGOL
extended for design |
| AEEC |
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) |
| AESS |
aircraft
environment surveillance system |
| 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 Ethernet switch |
| AFEPS |
ACARS
front-end processing system |
| AFGCS |
automatic
flight guidance and control system |
| AFI |
authority
format identifier |
| AFIS |
airborne
flight information system |
| AFIS |
automatic
flight information service |
| AFIS |
automated
flight inspection system |
| AFM |
aircraft
flight manual |
| AFN |
air
traffic services facilities notification |
| 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 |
| A/G |
air/ground;
air to ground |
| 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 |
| AGCU |
auxiliary
generator control unit |
| 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 subnetwork |
| AGW |
ARTS
gateway |
| AHC |
attitude
heading computer |
| AHRS |
attitude
heading reference system |
| AI |
alternative
interrogator |
| AI |
artificial
intelligence |
| 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 |
| AIMS |
airport
information management system |
| AINSC |
aeronautical
industry service communication |
| AIO |
analog
input/output |
| AIP |
aeronautical
information publication |
| AIP |
analog
input |
| AIP |
Airport
Improvement Program (FAA) |
| AIRAC |
aeronautical
information regulation and control |
| AIRCOM |
digital
air/ground communications service (SITA) |
| AIRMET |
airman’s
meteorological information |
| AIRO |
analog
input/reference output |
| AIS |
aeronautical
information service |
| AIS |
automatic
information services (Eurocontrol) |
| AISG |
Applications
Interface Subgroup (IATA) |
| AIV |
accumulator
isolation valve |
| AJPS |
AFEPS
journal processing system |
| A/L |
autoland |
| ALC |
airline
link control |
| ALC |
asynchronous
link control |
| ALC |
automatic
level control |
| ALPA |
Air
Line Pilots Association |
| ALPS |
automatic
line protection service |
| ALS |
application
layer structure |
| ALT |
airborn
link terminal |
| ALT |
altitude/alternate |
| ALD HOLD |
altitude
hold mode |
| ALTM |
altimeter |
| ALTN |
alternate |
| ALTS |
altitude
select |
| ALU |
arithmetic
and logic unit |
| AM |
access
module |
| AM |
amplitude
modulation |
| AMASS |
airport
movement area safety system |
| AMC |
Avionics
Maintenance Conference |
| AMCP |
aeronautical
mobile communications panel |
| AME |
amplitude
modulation equivalent |
| AMI |
airline
modifiable information |
| AMLCD |
active
matrix liquid crystal display |
| AMP |
audio
management panel |
| AMPL |
amplifier |
| AMS |
ARINC
maintenance service |
| AMS |
apron
management service |
| AMS |
avionics
management service |
| AMS |
acquisition
management system |
| 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 |
audio
management unit |
| AMU |
ACARS/avionics
management unit |
| AMUX |
audio
multiplexer |
| A/N |
alphanumeric |
| ANC |
Air
Navigation Commission (ICAO) |
| ANDC |
airport
and navigation data compiler |
| ANICS |
Alaskan
NAS Interfacility Communication |
| ANLP |
ARINC
network layer protocol |
| ANP |
actual
navigation performance |
| ANP |
air
navigation plan/performance |
| ANS |
air
navigation system |
| ANS |
ambient
noise sensor |
| ANSI |
American
National Standards Institute |
| ANTC |
advanced
networking test center |
| AO |
acronymic
obfuscation |
| AOA |
ACARS
over AVLC |
| AOA |
angle
of attack |
| AOC |
airport
obstruction chart |
| AOC |
airport
operational communications |
| AOC |
aircraft
operational control |
| AOC |
airline
operational control |
| AOC |
aeronautical
operational control |
| AOC |
airline
operations center |
| 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 |
analog
output |
| AOP |
aeronautical
OSI profile |
| AOP |
airline
operational procedure |
| AOPA |
Aircraft
Owners and Pilots Association |
| AOR |
Atlantic
Ocean region |
| AOR-E |
Atlantic
Ocean region-east |
| AOR-W |
Atlantic
Ocean region-wes |
