Acronyms
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A
| Acronym | Meaning | Source |
| A | Amber | ICAO |
| A/A | Air to air | AIS |
| A/G | Air-to-ground | AIS |
| AAA | Australian Airports Association | ICAO |
| AAAA | Aerial Agricultural Association of Australia | |
| AAC | Airworthiness Advisory Circular | CAR 1988 |
| AACC | Area approach control centre | AIS |
| AAD | Assigned altitude deviation | AIS |
| AAIM | Aircraft Autonomous Integrity Monitor | |
| AAIS | Automatic aerodrome information service | AIS |
| AAL | Above aerodrome level | AIS |
| AAR | Authorised Airworthiness Representative | CASR Part 183 |
| AAT | Administrative Appeals Tribunal | |
| ABAA | Amateur Built Aircraft Acceptance | CASR Part 21 |
| ABAA (2) | Australian Business Aircraft Association | |
| ABAS | Aircraft Based Augmentation System | |
| ABF | Australian Ballooning Federation | |
| ABI | Advance boundary information | AIS |
| ABM | Abeam | AIS |
| ABN | Aerodrome beacon | AIS |
| ABT | About | AIS |
| ABV | Above... | AIS |
| AC | Advisory Circular (document supporting 1998 CASRs) | CASR 1998 |
| AC | Altocumulus (met) | ICAO/AIP |
| ACA | Australian Commonwealth Authority | |
| ACARS | Aircraft communication addressing and reporting system (pronounced 'AY-CARS') | AIS |
| ACAS | Airborne Collision Avoidance System | CAR 1988 |
| ACC | Area control centre | AIS |
| ACCID | Initial notification of an aircraft accident | AIS |
| ACD | Airways clearance delivery | AIS |
| ACFT | Aircraft | AIS |
| ACJ-XXX | Advisory Circular Joint (issued by the JAA, can be followed by a country code) | JAA |
| ACK | Acknowledge | AIS |
| ACL | Altimeter check location | ICAO |
| ACN | Aircraft classification number | ICAO |
| ACN | Australian company number | |
| ACPT | Accept, accepted | AIS |
| ACROB | Acrobatics | |
| Act | the Civil Aviation Act 1988 | |
| ACT | Active, activated, activity | AIS |
| AD | Aerodrome | ICAO/AIP |
| AD | Airworthiness Directive | CASR Part 39 |
| ADA | Advisory area | ICAO |
| ADAO | Authorised Design Approval Organisation | CASR Part 146 |
| ADC | Aerodrome chart | AIS |
| ADDGM | Aerodrome diagrams | AIS |
| ADDN | Addition, additional | AIS |
| ADF | Automative Direction Finding (equipment) | AIS |
| ADF (2) | Australian Defence Force | |
| ADIZ | Air Defence Identification Zone | ICAO/AIS |
| ADJ | Adjacent | AIS |
| ADMAN | Automated Arrivals and Departure Management | |
| ADO | Aerodrome office | ICAO |
| ADQ | Adequate aerodrome | AIS |
| ADR | Advisory route | |
| ADS | The address (when this abbreviation is used to request a repetition, the question (IMI) precedes the abbreviation, eg IMI ADS) (to be used in AFS as a procedure signal) | ICAO/AIP |
| ADS | Automatic Dependent Surveillance | AIP/ICAO |
| ADS-B | Automatic Dependent Surveillance - Broadcast | AIP |
| ADS-C | Automatic Dependent Surveillance - Contract | AIP |
| ADSU | Automatic Dependent Surveillance Unit | ICAO |
| ADZ | Advise | AIS |
| AEB | CASA's Airworthiness Engineering Branch | CASA |
| AEP | Aerodrome emergency plan | AIS |
| AER | Authorised Engineering Representative | CASR Part 183 |
| AERIS | Automatic en route information service | AIS |
| AFAP | Australian Federation of Air Pilots | |
| AFCS | Automatic flight control system | ICAO |
| AFIL | Flight notification: - filed in the air, or - indicating the position at which ATS services will first be required | AIS |
| AFIS | Aerodrome flight information service | ICAO/AIP |
| AFM | Aircraft Flight Manual | CAR 1988 |
| AFM | Yes, affirm, affirmative, that is correct | AIS |
| AFRU | Aerodrome Frequency Response Unit (also known as a "beepback" unit) | AIS |
| AFS | Aeronautical fixed service | ICAO/AIP |
| AFT | After | AIS |
| AFTN | Aeronautical fixed telecommunication network | ICAO |
| AFZ | Australian fishing zone(s) | AIS |
| Ag | Agriculture | |
| AGA | Again | ICAO |
| AGD | Attorney-General's Department | |
| AGE | Aircraft Ground Equipment | WATOG |
| AGL | Above Ground Level | ICAO/AIP |
| AH | After hours | AIS |
| AH | Artificial Horizon | |
| AIC | Aeronautical Information Circular | AIP |
| AIDC | Air traffic services inter-facitility data communications | ICAO |
| AIP | Aeronautical Information Publication | ICAO/AIP |
| AIPA | Australian International Pilots Association | |
| AIP ENR | Aeronautical Information Publication En-route | |
| AIP ERSA | Aeronautical Information Publication En-route Supplement Australia | |
| AIRAC | Aeronautical Information Regulation and Control | ICAO/AIP |
| AIRC | Aeronautical Information and Control | ICAO |
| AIREP | Air-Report | AIP/ICAO |
| AIRMET | Information in plain language concerning weather significant to light aircraft operations at or below 10,000FT | AIS |
| AIS | Aeronautical Information Service | AIP |
| AL | Approach Lights | AIS |
| ALA | Aircraft Landing Area (for purpose of CAR 1988 92(1)(d)) | AIP |
| ALA | Alighting area | ICAO |
| ALA/HLS | Aircraft Landing Area/Helicopter Landing Site | |
| ALAEA | Australian Licensed Aircraft Engineers Association | |
| ALARP | As Low as Reasonably Practical | AIS |
| ALERFA | Alert phase | AIS |
| ALI | Airworthiness Limitation Item | |
| ALM | Aircraft Landing Minima | AIS |
| ALR | Alerting Message | AIS |
| ALRS | Approach lighting system | ICAO |
| ALS | Approach Lighting System | AIS |
| ALT | Altitude | AIS |
| ALTN | Alternate, Alternating (light alternates in colour) | AIS |
| ALTN | Alternate (aerodrome) | AIS |
| AMA | Area minimum altitude | ICAO |
| AMC | Acceptable Means of Compliance | |
| AMD | Amend, Amended | AIS |
| AMDT | Amendment (AIP amendment) | ICAO/AIP |
| AME | Aircraft Maintenance Engineer | CASR Part 66 |
| AMHS | Aeronautical Message Handling System | |
| AMM | Aircraft Maintenance Manual | WATOG |
| AMO | Approved Maintenance Organisation | CASR Part 145 |
| AMP | Aircraft Maintenance Program | CASR Part 145 |
| AMPA | Authorised Maintenance Personnel Assessor | CASR Part 66 |
| AMRD | Australian Maintenance Requirements Document | CASR Part 43 |
| AMS | Aircraft Maintenance Specialist | CASR Part 145 |
| AMSA | Australian Maritime Safety Agency | |
| AMSL | Above Mean Sea Level | AIS |
| AMSS | Aeronautical mobile satellite service | ICAO |
| AMT | Aircraft Maintenance Technician | CASR Part 66 |
| ANA | Air Navigation Act | |
| ANC | Aeronautical Chart 1:50,000 (followed by name/title) | AIS |
| ANCS | Aeronautical navigation chart - small scale (followed by name/title and scale) | ICAO |
| ANO | Air Navigation Order (now CAO) | |
| ANS | Answer | ICAO |
| ANSP | Air Navigation Service Provider | |
| ANTA | Australian National Training Authority | CASR Part 66 |
| ANVIS | Aviator Night Vision Imaging Systems | |
| AO | Air Operator | |
| AOC | Aerodrome Obstacle Chart (followed by name/title) | AIS/AIP |
| AOC | Air Operators Certificate | CASR Part 119 |
| AOCM | Air Operators Certification Manual | |
| AOD | Alcohol and Other Drug | CASA |
| AOG | Aircraft On Ground | WATOG |
| AOPA | Aircraft Owners and Pilots Association | |
| AP | Airport | AIS |
| APAPI | Abbreviated Precision Approach Path Indicator (pronounced 'AY-PAPI') | AIS |
| APCH | Approach | AIS |
| APDC | Aircraft Parking/Docking Chart (followed by name/title) | AIS |
| APF | Australian Parachute Federation | |
| APMA | Australian Parts Manufacturer Approval | CASR Part 21 |
| APN | Apron | ICAO/AIP |
| APP | Approach Control | AIS |
| APR | April | ICAO/AIP |
| APRX | Approximate, Approximately | AIS |
| APSG | After Passing | AIS |
| APU | Auxillary power unit | ICAO |
| APV | Approach with Vertical Guidance | |
| APV | Approve, Approved, Approval | AIS |
| AQZ | Area QNH Zone | AIS |
| ARC | Advance Regulatory Change (legislative change project) | CASA |
| ARC | Area Chart | ICAO/AIP |
| ARFFS | Aerodrome Rescue and Fire Fighting Service (sometimes referred to as RFFS) | CASR Part 139 |
| ARFL | Aeroplane Reference Field Length | AIS |
| ARFO | Area Forecast | |
| ARG | Aviation Reform Group | |
| ARH | Aircraft Registration Holder | CASR Part 47 |
| ARM | Airspace Risk Model | ICAO/CASA |
| ARM | Aircraft Recovery Manual | WATOG |
| ARN | Aviation Reference Number | CASA/AIP |
| ARNG | Arrange | AIS |
| ARO | Air traffic services reporting office | ICAO |
| ARP | Aerodrome reference point | ICAO/AIP |
| ARP | Air-Report (message type designator) | ICAO/AIP |
| ARQ | Automatic error correction | ICAO |
| ARR | Arrive, Arrival | AIS |
| ARS | Special Air-Report (message type designator) | AIS |
| ARST | Arresting (specify (part of) aircraft arresting equipment) | ICAO |
| AS | Altostratus (meteorological) | ICAO/AIP |
| AS | Australian Standard | |
| ASA | Australian Skydiving Association | |
| ASAC | Australian Sports Aviation Confederation | |
| ASAP | As Soon as Possible | AIS |
| ASAS | Airbourne Separation Assistance System | |
| ASC | Ascend to or ascending | ICAO |
| ASDA | Accelerate-stop distance available | ICAO |
| ASE | Airborne Support Equipment | WATOG |
| ASE | Altimetry System Error | ICAO/AIP |
| ASEPTA | Approved Single-engine Turbine Aeroplane | |
| ASF | Aviation Safety Forum | AIS |
| ASH | Aviation Services Handbook | |
| ASI | Air Speed Indicatort | |
| ASI | Aviation Safety Index | |
| ASIR | Aviation Safety Incident Report | |
| ASMGCS | Airport Surface Movement Guidance & Control System | |
| ASPH | Asphalt | ICAO |
| ASR | Area Surveillance Radar | AIS |
| ASRA | Australian Sport Rotorcraft Association | |
| ASSI | Air Safety Support International- a wholly-owned subsidiary of the UK Civil Aviation Authority | Air Safety Support International (UK) |
| ASTM | American Society for Testing Materials | |
| ASTRA | Australian Strategic Air Traffic Management Group | |
| AT-VASIS | Abbreviated 'T' Visual Approach Slope Indicator System (pronounced 'AY-TEE-VASIS') | AIS |
| AT... | At (followed by time at which weather change is forecast to occur) | ICAO |
| ATA | Actual Time of Arrival | AIS |
| ATA | Air Transport Association | |
| ATC | Air Traffic Control (in general) | ICAO/AIP |
| ATD | Actual Time of Departure | AIS |
| ATE | Automatic Test Equipment | WATOG |
| ATEL/ANAV | Aeronautical Telecommunication and Radio Navigation Services | CASR Part 171 |
| ATFM | Air Traffic Flow Management | AIS |
| ATIS | Automatic terminal information service | ICAO |
| ATLAS | The Australian Transition to Satellite Technology | |
| ATM | Air Traffic Management | ICAO/AIP |
| ATMCP | Air Traffic Management Concept Panel | |
| ATN | Aeronautical telecommunications network | ICAO |
| ATO | Aviation Testing Officer | |
| ATO | Aviation Training Organisatio | |
| ATOG | CASA's Air Transport Operations Group | CASA |
| ATP | At.. (time or place) | ICAO |
| ATPL | Airline Transport Pilot Licence | |
| ATS | Air Traffic Service(s) | CASR Part 172 |
| ATSB | Australian Transport Safety Bureau | |
| ATSO | Australian Technical Standard Order | CASR Part 21 |
| ATSOA | Australian Technical Standard Order Authorisation | CASR Part 21 |
| ATTN | Attention | AIS |
| ATZ | Aerodrome traffic zone | ICAO |
| AUF | Australian Ultralight Federation (now Recreational Aviation Australia) | |
| AUG | August | AIS |
| AUSFIC | Australian Flight Information Centre | |
| AUTH | Authorised, Authorisation | AIS |
| AUW | All Up Weight | AIS |
| AUX | Auxiliary | AIS |
| AVBL | Available | AIS |
| AVG | Average | AIS |
| AVGAS | Aviation Gasoline | AIS |
| AVM | Abrupt Vertical Manoeuvres (by the MIL) | AIS |
| AWB | Airworthiness Bulletin | |
| AWIB | Aerodrome Weather Information Broadcast | AIS |
| AWK | Aerial Work (Air work - general aviation) | AIS |
| AWS | Automatic Weather Station | AIS |
| AWTA | Advise as to what time is available | ICAO |
| AWY | Airway | ICAO/AIP |
| AZM | Azimuth | ICAO/AIP |