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Aviation abbreviations
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A

A — Amber
A — At, above
A — Autotuned navigation aid
A/A — Air-to-air
A/C — Aircraft
A/G — Air-to-ground
A/I — Anti-ice
A/P — Autopilot
A/T — Autothrottle
AAA — Amended meterological message
AAC — Aeronautical administration communication
AAC — Airworthiness Advisory Circular
AACC — Area approach control centre
AAD — Assigned altitude deviation
AAIM — Aircraft autonomous integrity monitor
AAIS — Automatic aerodrome information service
AAL — Above aerodrome level
AAR — Authorised airworthiness representative
AAS — Advanced automation system
AAT — Administrative appeals tribunal
AATT — Advanced aviation transportation technology
ABAA — Amateur built aircraft acceptance
ABAS — Aircraft based augmentation system
ABI — Advance boundary information
ABM — Abeam
ABN — Aerodrome beacon
ABT — About
ABV — Above
AC — Altocumulus
AC — Advisory Circular
ACARS — Aircraft communication addressing and reporting system
ACAS — Airborne collision avoidance system
ACC — Area control centre
ACCID — Initial notification of an aircraft accident
ACD — Airways clearance delivery
ACF — Area control facility
ACFS — Advanced concepts flight simulator
ACFT — Aircraft
ACJ-XXX — Advisory circular joint
ACK — Acknowledge
ACL — Altimeter check location
ACMS — Aircraft condition monitoring system
ACN — Aircraft classification number
ACPT — Accept, accepted
ACROB — Acrobatics
ACT — Active, activated, activity
AD — Aerodrome
AD — Airworthiness directive
ADA — Advisory area
ADC — Aerodrome chart
ADC — Air data computer
ADDGM — Aerodrome diagrams
ADDN — Addition, additional
ADF — Automatic direction finding
ADI — Attitude director indicator
ADIZ — Air defence identification zone
ADJ — Adjacent
ADLP — Aircraft data link processor
ADO — Aerodrome office
ADQ — Adequate aerodrome
ADR — Advisory route
ADS — Automatic dependent surveillance
ADS-B — Automatic dependent surveillance-broadcast
ADS-C — Automatic dependent surveillance-contract
ADSU — Automatic dependent surveillance unit
ADZ — Advise
AEP — Aerodrome emergency plan
AER — Authorised engineering representative
AERA — Automated en-route ATC
AERIS — Automatic en-route information service
AFCS — Automatic flight control system
AFDS — Autopilot flight director system
AFIS — Aerodrome flight information service
AFM — Yes, affirm, affirmative, that is correct
AFM — Aircraft Flight Manual
AFRU — Aerodrome frequency response unit
AFS — Aeronautical fixed service
AFS — Automatic flight system
AFT — After
AFTN — Aeronautical fixed telecommunication network
AG — Agriculture
AGA — Again
AGATE — Advanced general aviation transport experiments
AGL — Above ground level
AH — After hours
AH — Artificial horizon
AHRS — Attitude heading reference system
AI — Artificial intelligence
AIC — Aeronautical Information Circular
AIDC — Air traffic services inter-facitility data communications
AIP — Aeronautical Information Publication
AIRAC — Aeronautical Information Regulation and Control
AIRC — Aeronautical information and control
AIREP — Air-report
AIRMET — Airmen’s meteorological information
AIRS — Advanced infrared sounder
AIS — Aeronautical information service
AL — Approach lights
ALA — Aircraft landing area
ALA — Alighting area
ALA/HLS — Aircraft landing area/helicopter landing site
ALARP — As low as reasonably practical
ALERFA — Alert phase
ALI — Airworthiness limitation item
ALM — Aircraft landing minima
ALR — Alerting message
ALS — Approach lighting system
ALT — Alternate
ALT — Altitude
ALT HOLD — Altitude hold mode
ALTN — Alternate, alternating
AM — Amplitude modulation
AMA — Area minimum altitude
AMC — Acceptable means of compliance
AMD — Amend, amended
AMDT — Amendment
AME — Aircraft maintenance engineer
AMM — Aircraft Maintenance Manual
AMO — Approved maintenance organisation
AMP — Aircraft maintenance program
AMPA — Authorised maintenance personnel assessor
AMS — Aircraft maintenance specialist
AMSL — Above mean sea level
AMSS — Aeronautical mobile satellite service
AMT — Aircraft maintenance technician
ANA — Air navigation act
ANC — Aeronautical chart, 1:50,000
ANCS — Aeronautical navigation chart, small scale
ANO — Air navigation order
ANS — Answer
ANVIS — Aviator night vision imaging systems
AO — Air operator
AOA — Airport operations area
AOA — Angle of attack
AOC — Aerodrome obstacle chart
AOC — Aeronautical operation control
AOC — Air Operators Certificate
AOCM — Air Operators Certification Manual
AOCS — Attitude and orbit control system
AOD — Alcohol and other drug
AOG — Aircraft on ground
AOM — Aircraft Operating Manual
AP — Airport
APAPI — Abbreviated precision approach path indicator
APC — Aeronautical passenger communication
APCH — Approach
APDC — Aircraft parking/docking chart
APMS — Automated performance measurement system
APN — Apron
APP — Approach control
APR — April
APRT — Airport
APRX — Approximate, approximately
APSG — After passing
APU — Auxillary power unit
APV — Approach with vertical guidance
APV — Approve, approved, approval
AQP — Advanced qualification program
AQZ — Area QNH zone
ARC — Area chart
ARFFS — Aerodrome rescue and fire fighting service
ARFL — Aeroplane reference field length
ARFO — Area forecast
ARH — Aircraft registration holder
ARM — Aircraft Recovery Manual
ARM — Airspace risk model
ARN — Aviation reference number
ARNG — Arrange
ARO — Air traffic services reporting office
ARP — Aerodrome reference point
ARP — Air-report
ARQ — Automatic error correction
ARR — Arrive, arrival
ARS — Special air-report
ARST — Arresting
ARTCC — Air route traffic control center
ARTS — Automated radar terminal system
AS — Altostratus
ASAP — As soon as possible
ASC — Ascend, ascending
ASDA — Accelerate-stop distance available
ASE — Altimetry system error
ASE — Airborne support equipment
ASEPTA — Approved single-engine turbine aeroplane
ASH — Aviation Services Handbook
ASI — Airspeed indicator
ASI — Aviation safety index
ASIR — Aviation safety incident report
ASPH — Asphalt
ASR — Area surveillance radar
ASR — Airport surveillance radar
ASRS — Aviation safety reporting system
AT — At
ATA — Actual time of arrival
ATC — Air traffic control
ATCSCC — Air traffic control system command center
ATD — Actual time of departure
ATE — Automatic test equipment
ATEL/ANAV — Aeronautical telecommunication and radio navigation services
ATFM — Air traffic flow management
ATHR — Autothrust system
ATIS — Automatic terminal information service
ATM — Air transportation management
ATM — Air traffic management
ATN — Aeronautical telecommunications network
ATO — Aviation testing officer
ATPL — Airline Transport Pilot Licence
ATS — Air traffic service
ATS — Automatic throttle system
ATSC — Air traffic service communications
ATTN — Attention
ATZ — Aerodrome traffic zone
AUG — August
AUTH — Authorised, authorisation
AUW — All up weight
AUX — Auxiliary
AVAIL — Available
AVBL — Available
AVG — Average
AVGAS — Aviation gasoline
AVHRR — Advanced very high-resolution radiometer
AVM — Abrupt vertical manoeuvres
AWACS — Airborne warning and control system
AWAS — Automated weather advisory station
AWB — Airworthiness bulletin
AWIB — Aerodrome weather information broadcast
AWIPS — Advanced Weather Interactive Processing System
AWK — Aerial work
AWS — Automatic weather station
AWTA — Advise as to what time is available
AWY — Airway
AZM — Azimuth

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