| °T |
Bearing (true) |
AIS |
| °M |
Bearing (magnetic) |
AIS |
| A |
Amber |
ICAO |
| A/A |
Air to air |
AIS |
| A/G |
Air-to-ground |
AIS |
| AAA |
Amended meterological message |
ICAO |
| AAAA |
Aerial Application 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 |
| 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 |
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 |
Automatic Direction Finding (equipment) |
AIS |
| ADF |
Australian Defence Force |
|
| ADIZ |
Air Defence Identification Zone |
ICAO/AIS |
| ADJ |
Adjacent |
AIS |
| 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 |
|
| AGL |
Above Ground Level |
ICAO/AIP |
| AH |
Artificial Horizon |
|
| AH |
After hours |
AIS |
| AIC |
Aeronautical Information Circular |
AIP |
| AIDC |
Air traffic services inter-facitility data communications |
ICAO |
| AIP |
Aeronautical Information Publication |
ICAO/AIP |
| AIP ENR |
Aeronautical Information Publication En-route |
|
| AIP ERSA |
Aeronautical Information Publication En-route Supplement Australia |
|
| AIP GEN |
Aeronautical Information Publication General |
|
| 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 |
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 |
| 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 Authority |
|
| 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 |
|
| ANS |
Answer |
ICAO |
| ANTA |
Australian National Training Authority |
CASR Part 66 |
| ANVIS |
Aviator Night Vision Imaging Systems |
|
| AO |
Air Operator |
|
| AOC |
Air Operators Certificate |
CASR Part 119 |
| AOC |
Aerodrome Obstacle Chart (followed by name/title) |
AIS/AIP |
| 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 |
| 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 |
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 |
|
| 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 |
| 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 Indicator |
|
| ASI |
Aviation Safety Index |
|
| ASIR |
Aviation Safety Incident Report |
|
| 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 |
| ATM |
Air traffic management |
ICAO/AIP |
| ATN |
Aeronautical telecommunications network |
ICAO |
| ATO |
Aviation Testing Officer |
|
| ATP |
At.. (time or place) |
ICAO |
| ATPL |
Airline Transport Pilot Licence |
|
| ATS |
Air Traffic Service(s) |
|
| 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) |
|
| 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 |
| B |
Blue |
ICAO/AIP |
| BA |
Braking action |
ICAO |
| BASA |
Bilateral Aviation Safety Agreement |
|
| BASE |
Cloud Base (met) |
AIS |
| BCFG |
Fog Patches (met) |
AIS |
| BCN |
Beacon (aeronautical ground light) |
AIS |
| BCST |
Broadcast |
AIS |
| BDRY |
Boundary |
AIS |
| BECMG |
Becoming |
AIS |
| BETA |
Manually controlled mode for constant speed propellers or turbo prop aircraft |
|
| BFR |
Before |
AIS |
| BIP-M |
Basic Instruction Package for Meteorologists |
|
| BIPMT |
Basic Instruction Package for Meteorological Technicians |
|
| BITE |
Built In Test Equipment |
WATOG |
| BKN |
Broken (cloud descriptor) (met) |
AIS |
| BL… |
Blowing (followed by DU=dust, SA=sand or SN=snow) |
AIS |
| BLDG |
Building |
AIS |
| BLO |
Below Clouds |
AIS |
| BLW |
Below |
AIS |
| BOM |
Bureau of Meteorology |
AIS |
| BOMB |
Bombing |
AIS |
| BR |
Mist |
AIS |
| BRF |
Short (used to indicate type of approach) |
AIS |
| BRG |
Bearing |
AIS |
| BRKG |
Braking |
AIS |
| BRW |
Brakes release weight |
|
| BS |
Broadcasting Station (Commercial) |
AIS |
| BTL |
Between Layers |
AIS |
| BTN |
Between |
AIS |
| C |
Degrees Celsius (Centigrade) |
AIS |
| C |
Centre (Runway) |
AIS |
| CA |
Course Acquisition |
|
| CA/GRO |
Certified Air/Ground Radio Operator |
CASR Part 139 |
| CA/GRS |
Certified Air/Ground Radio Service |
CASR Part 171 |
| CAA NZ |
Civil Aviation Authority New Zealand |
|
| CAAP |
Civil Aviation Advisory Publication |
CAR 1988 |
| CAGRO |
Certified Air Ground Radio Operation |
AIP |
| CAMO |
Continuing Airworthiness Management Organisation |
|
| CAMP |
Continuous Airworthiness Maintenance Program |
CASR Part 145 |
| CAO |
Civil Aviation Order |
|
| CAR |
Civil Aviation Regulations 1988 |
|
| CAS |
Calibrated air speed |
ICAO |
| CASA |
Civil Aviation Safety Authority |
|
| CASR |
Civil Aviation Safety Regulations 1998 |
|
| CAT |
Category |
AIS |
| CAT |
Clear Air Turbulence |
AIS |
| CAVOK |
Visibility, cloud and present weather better than prescribed values or conditions |
AIS |
| CB |
Cumulonimbus (met) |
AIS |
| CBT |
Competency-based Training |
|
| CC |
Cirrocumulus (met) |
AIS |
| CCA |
Corrected meteorological message (for CCB, CCC..etc., in sequence) (message type designator) |
ICAO |
| CCF |
Capability Check Flight |
|
| CCTS |
Circuits |
AIS |
| CD |
Candela |
ICAO |
| CDCCL |
Critical Design Configuration Control Limit |
|
| CDI |
Course Direction Indicator |
|
| CDL |
Configuration Deviation List |
CASR Part 43 |
| CDN |
Coordination (message type designator) |
ICAO |
| CEN |
En Route and Area ATC unit |
AIS |
| CEO |
Chief Executive Officer |
|
| CET |
Clearance Expiry Time |
AIS |
| CF |
Change Frequency to |
AIS |
| CFI |
Chief Flying Instructor |
CAR 1988 |
| CFIT |
Controlled Flight into Terrain |
|
| CFL |
Cleared Flight Level |
AIS |
| CFM |
Confirm, I confirm |
AIS |
| CG |
Centre of gravity |
ICAO |
| CGL |
Circling guidance light(s) |
ICAO |
| CH |
This is a channel continuity check of transmission to permit comparision of your record of channel-sequence numbers of messages received on the channel (to be used in AFS as a procedure signal) |
ICAO |
| CHG |
Modification (message type designator) |
ICAO |
| CHTR |
Charter |
AIS |
| CI |
Cirrus (met) |
AIS |
| CIDIN |
Common ICAO data interchange network |
ICAO |
| CIR |
Command Instrument Rating |
CAR 1988 |
| CIT |
Near, Over Large Town(s) |
AIS |
| CIV |
Civil |
AIS |
| CK |
Check |
AIS |
| CL |
Centre Line |
AIS |
| CLA |
Clear type of ice formation |
AIS |
| CLBR |
Calibration |
AIS |
| CLD |
Cloud (met) |
AIS |
| CLG |
Calling |
AIS |
| CLIAS |
Climbing Indicated Airspeed |
AIS |
| CLMAX |
Maximum Co-efficient of Lift |
|
| CLR |
Clear, Cleared to… Clearance |
AIS |
| CLSD |
Closed, Close, Closing |
AIS |
| CM (cm) |
Centimetre |
AIS |
| CMB |
Climb to or Climbing to |
AIS |
| CMM |
Component Maintenance Manual |
WATOG |
| CMPL |
Configuration, Maintenance and Procedures |
|
| CMPL |
Completion, Completed, or Complete |
AIS |
| CMR |
Certification Maintenance Requirements |
|
| CMSD |
Commissioned |
AIS |
| CNL |
Cancel |
AIS |
| CNL |
Flight plan cancellation message |
AIS |
| CNS |
Communications, Navigation and Surveillance |
AIS |
| COA |
Certificates of Approval (issued to maintenance organisations) |
CAR 1988 |
| CofA |
Certificate of Airworthiness |
CAR 1988 |
| COM |
Communications |
AIS |
| CONC |
Concrete |
AIS |
| COND |
Condition |
AIS |
| CONS |
Continuous |
AIS |
| CONST |
Construction, Constructed |
AIS |
| CONT |
Continue(s), Continued |
AIS |
| COOR |
Coordinate, Coordinated |
AIS |
| COORD |
Coordinates |
AIS |
| COP |
Change over point |
ICAO |
| CoR |
Certificate of Registration |
CAR 1988 |
| COR |
Correct, Corrected, Correction |
AIS |
| COS |
Conical Surface |
AIS |
| COT |
At the Coast, Coastal |
AIS |
| COV |
Cover, Covered, Covering |
AIS |
| CP |
Chief Pilot |
CAR 1988 |
| CPDLC |
Controller-Pilot Data Link Communication |
ICAO/AIP |
| CPL |
Commercial Pilot Licence |
CAR 1988 |
| CPL |
Current flight plan |
ICAO |
| CRC |
Cyclic redundancy check |
ICAO |
| CRIS |
Cost Recovery Impact Statement |
Department of Finance |
| CRM |
Crew Resource Management |
CASR Part 121 |
| CRZ |
Cruise |
AIS |
| CS |
Cirrostratus (met) |
AIS |
| CS |
Call sign |
AIS |
| CSDD |
Common Support Data Dictionary published by the Air Transport Association of America (ATA). The CSDD replaces the WATOG. |
|
| CSU |
Constant Speed Unit |
|
| CTA |
Control Area |
AIS |
| CTAF |
Common Traffic Advisory Frequency |
CASR Part 172/AIP |
| CTAF(R) |
Common Traffic Advisory Frequency – (Radio) |
AIS |
| CTAM |
Climb to and maintain |
ICAO |
| CTC |
Category Technical Competency |
CAR 1988 |
| CTC |
Contact |
ICAO/AIP |
| CTL |
Control |
AIS |
| CTN |
Caution |
AIS |
| CTR |
Control Zone |
AIP |
| CU |
Cumulus (met) |
AIS |
| CUF |
Cumuliform (met) |
AIS |
| CUST |
Customs |
AIS |
| CVR |
Cockpit voice recorder |
ICAO/AIP |
| CW |
Carrier Wave |
ICAO |
| CWY |
Clearway |
AIS |
| D |
Deleted |
AIS |
| D |
Downward (tendency in RVR (Runway visual range) during previous 10 minutes) |
ICAO |
| D-ATIS |
Data Link Automatic Terminal Information Service (pronounced’DEE-ATIS’) |
AIS |
| D-VOLMET |
Data Link VOLMET |
AIS |
| D… |
Danger Area (followed by identification) |
AIS |
| DA |
Decision Altitude |
AIS |
| DA/H |
Decision Altitude/Height |
AIP |
| DALR |
Dry Adiabatic Lapse Rate |
|
| DAME |
Designated Aviation Medical Examiner |
CASR Part 67 |
| DAO |
Designated Aviation Ophthamologist |
CASR Part 67 |
| DAP |
Departure and Approach Procedures |
AIP |
| DCD |
Double channel duplex |
ICAO |
| DCKG |
Docking |
AIS |
| DCMSD |
Decommissioned |
AIS |
| DCPC |
Direct Controller-Pilot Communications |
AIS |
| DCS |
Double channel simplex |
ICAO |
| DCT |
Direct (in relation to flight plan clearances and type of approach) |
AIS |
| DE |
Form (used to preceed the call sign of the calling station) (to be used in AFS as a procedure signal) |
ICAO/AIP |
| DEC |
December |
AIS |
| DEG |
Degrees |
AIS |
| DEP |
Depart, Departure, Departed, Departing, Departure Message |
AIS |
| DER |
Departure End of Runway |
AIP |
| DER |
Designated Engineering Representative |
FAR |
| DES |
Descend to, Descending to |
AIS |
| DEST |
Destination |
AIS |
| DETRESFA |
Distress Phase |
AIS |
| DEV |
Deviation, Deviating |
AIS |
| DF |
Direction Finder/ Finding |
AIS |
| DFDR |
Digital Flight Data Recorder |
AIS |
| DFTI |
Distance from touchdown indicator |
ICAO |
| DGA |
Distance Measuring Equipment or Global Positioning Satellite System Arrival |
|
| DH |
Decision Height |
ICAO |
| DIF |
Diffuse |
AIS |
| DISP |
Displaced |
AIS |
| DIST |
Distance |
AIS |
| DIV |
Diversion, Divert, Diverting |
AIS |
| DLA |
Delay (message type designator) |
ICAO/AIP |
| DLIC |
Data Link Initiation Capability |
AIS |
| DLY |
Daily |
AIS |
| DMC |
Direct Maintenance Cost |
WATOG |
| DME |
Distance Measuring Equipment |
ICAO/AIP |
| DMEN |
DME (International) |
AIS |
| DMEP |
DME (International Precision used in conjunction with Microwave Landing System) |
AIS |
| DNG |
Danger, Dangerous |
AIS |
| DOC |
Direct Operating Cost |
WATOG |
| DOC |
Documents |
AIS |
| DoD |
Department of Defence |
|
| DOM |
Domestic |
AIS |
| DP |
Dew Point Temperature |
ICAO/AIP |
| DP |
Discussion Paper |
CASA |
| DPT |
Depth |
AIS |
| DR |
Dead Reckoning (navigation) |
ICAO |
| DR… |
Low drifting (followed by DU=dust, SA=sand or SN=snow) |
AIS |
| DRG |
During |
AIS |
| DS |
Dust storm |
AIS |
| DSB |
Double sideband |
ICAO |
| DTAM |
Descend to And Maintain |
AIS |
| DTG |
Date-Time Group |
AIS |
| DTHR |
Displaced Runway Threshold |
AIS |
| DTRT |
Deteriorate, Deteriorating |
AIS |
| DTW |
Dual tandem wheels |
ICAO |
| DU |
Dust |
AIS |
| DUC |
Dense Upper Cloud (met) |
AIS |
| DUPE |
This is a duplicate message (to be used in Aeronautical Fixed Service as a procedure signal) |
ICAO |
| DUR |
Duration |
AIS |
| DVOR |
Doppler VOR |
AIS |
| DW |
Dual wheels |
ICAO |
| DZ |
Drizzle |
AIS |
| E |
East, East Longitude |
AIS |
| E E E |
Error (to be used in AFS as a procedure signal) |
ICAO |
| EASA |
European Aviation Safety Agency |
|
| EAT |
Expected Approach Time |
AIS |
| EB |
Eastbound |
AIS |
| ECAR |
European Civil Aviation Requirement (formerly JAR) |
|
| EDTO |
Extended Diversion Time Operations |
|
| EET |
Estimated Elapsed Time |
AIS |
| EFB |
Electronic Flight Bag |
|
| EFC |
Expect further clearance |
ICAO |
| EGNOS |
European Geostationary Navigation Overlay System |
|
| EGPWS |
Enhanced Ground Proximity Warning System |
CAR 1988 |
| EHF |
Extremely high frequency (30,000 to 300,000 MHz) |
ICAO/AIP |
| EHR |
Encumbrance Holder Register |
CASR Part 47 |
| ELBA |
Emergency locator beacon-aircraft |
ICAO |
| ELEV |
Elevation |
AIS |
| ELR |
Extra Long Range |
AIS |
| ELT(S) |
Emergency Locator Transmitter (Survival) |
CAR 1988 |
| EM |
Engine Manual |
WATOG |
| EM |
Explanatory Memorandum (submitted to EXCO with regulation amendment) |
|
| EM |
Emission |
AIS |
| EMBD |
Embedded in a Layer (to indicate cumulonimbus embedded in layers of other clouds) |
AIS |
| EMERG |
Emergency |
AIS |
| EMS |
Emergency Medical Service |
|
| EMS |
Environment Management System |
|
| END |
Stop-end (related to RVR) |
ICAO |
| ENDCE |
Endurance |
AIS |
| ENE |
East North-East |
AIS |
| ENG |
Engine |
AIS |
| ENR |
En Route |
AIS |
| ENRC |
En Route Chart (followed by name/title) |
AIS |
| EOBT |
Estimated off Blocks Time |
AIS |
| EPA |
Environment Protection Agency |
|
| EPIRB |
Electronic Position Indicating Radio Beacon (marine term.) |
AIS |
| EQPT |
Equipment |
AIS |
| ER |
Here..or herewith |
ICAO |
| ERC |
En-route Chart |
AIS |
| ERP |
Emergency Response Plan |
|
| ERSA |
En-route Supplement Australia |
AIP |
| ES |
Explanatory Statement (tabled with regulations in Parliament) |
|
| ESD |
Electrostatic sensitive discharge |
|
| ESDE |
ESD equipment |
|
| ESE |
East Southeast |
AIS |
| ESIR |
Electronic safety incident report |
|
| EST |
Estimate or estimated or estimate (message type designator) |
AIS |
| ETA |
Estimated Time of Arrival, Estimating Arrival |
AIS |
| ETCM |
Engine trend and condition monitoring |
|
| ETD |
Estimated Time of Departure, Estimating Departure |
AIS |
| ETO |
Estimated Time Over significant point |
AIS |
| ETOPS |
Extended range operations by turbine-engined aeroplanes |
ICAO |
| ETP |
Equi Time Interval |
|
| ETT |
Estimated Time Interval |
|
| EV |
Every |
AIS |
| EVU |
Enforceable Voluntary Undertaking |
Civil Aviation Act 1988 |
| EXC |
Except |
AIS |
| EXCO |
Executive Council |
|
| EXER |
Exercises, Exercising, to exercise |
AIS |
| EXP |
Expect, Expected, Expecting |
AIS |
| EXTD |
Extend, Extending, Extended |
AIS |
| F |
Fixed (chart symbol) |
AIS |
| FAA |
Federal Aviation Administration of the USA |
|
| FAAOC |
Foreign Aircraft Air Operator’s Certificate |
CASR Part 129 |
| FAC |
Facility, Facilities |
AIS |
| FADEC |
Full Authority Digital Engine Control |
|
| FAF |
Final Approach Fix |
AIP/ICAO |
| FAL |
Facilitation of International Air |
AIS |
| FAP |
Final Approach Point |
AIP/ICAO |
| FARs |
Federal Aviation Regulations (Federal Aviation Administration of the USA) |
|
| FATO |
Final approach and take-off area |
ICAO/AIP |
| FAWP |
Final Approach Waypoint |
AIS |
| FAX |
Facsimile Transmission |
AIS |
| FBL |
Light (used to indicate the intensity of WX phenomena, interference or static reports, eg BL RA = light rain) |
AIS |
| FC |
Funnel Cloud (tornado or water spout) |
AIS |
| FCST |
Forecast |
AIS |
| FCT |
Friction coefficient |
ICAO |
| FD |
Fault Detection |
|
| FDE |
Fault detection and exclusion (in relation to GPS equipment) |
|
| FDL |
Fixed Distance Lighting |
AIS |
| FDPS |
Flight Data Processing system |
AIS |
| FDS |
Flight Director System |
|
| FEW |
Few (cloud descriptor) |
AIS |
| FFR |
Flood, Fire Relief |
AIS |
| FG |
Fog |
AIS |
| FIA |
Flight Information Area |
AIS |
| FIC |
Flight Information Centre |
AIS |
| FIO |
Flight Information Office |
AIS |
| FIR |
Flight Information Region |
ICAO/AIP |
| FISA |
Flight information service (automated) |
ICAO |
| FISS |
Flight Information Service Station |
AIS |
| FIX |
Fault Isolation Manual |
WATOG |
| FL |
Flight Level |
ICAO/AIP |
| FLD |
Field |
AIS |
| FLG |
Flashing |
AIS |
| FLIR |
Forward Looking Infra Red |
|
| FLR |
Flares |
AIS |
| FLT |
Flight |
ICAO/WATOG/AIP |
| FLTCK |
Flight check |
ICAO/AIP |
| FLUC |
Fluctuating, Fluctuation, Fluctuated |
AIS |
| FLW |
Follow(s), Following |
AIS |
| FLY |
Fly, Flying |
AIS |
| FM |
From |
AIS |
| FM… |
From (followed by time weather change is forecast to begin) |
AIS |
| FMS |
Flight Management System |
ICAO |
| FMU |
Flow Management Unit |
AIS |
| FNA |
Final Approach |
AIS |
| FNPT |
Flight and Navigation Procedures Trainer |
ICAO |
| FOD |
Foreign Object Damage |
WATOG |
| FOI |
Flying Operations Inspector |
|
| FPD |
Flight Plan Designator |
AIS |
| FPL |
Filed Flight Plan Message |
AIS |
| FPM |
Feet per Minute |
AIS |
| FPR |
Flight Plan Route |
AIS |
| FR |
Fuel Remaining |
AIS |
| FREQ |
Frequency |
AIS |
| FRM |
Fault Reporting Manual |
WATOG |
| FRMS |
Fatigue Risk Management System |
|
| FRNG |
Firing |
AIS |
| FRONT |
Front (relating to weather) |
ICAO |
| FRQ |
Frequent |
AIS |
| FS |
Flight Service (in general) |
AIS |
| FSA |
Flight Safety Australia |
|
| FSL |
Full Stop Landing |
AIS |
| FSP |
Fish Spotting |
AIS |
| FSS |
Flight service station |
ICAO |
| FST |
First |
AIS |
| FT |
Feet |
AIS |
| FTD |
Flight training device |
CASR Part 60 |
| FTE |
Full time equivalent |
|
| FTO |
Flight Training Organisation |
|
| FU |
Smoke |
AIS |
| FXD |
Fixed |
AIS |
| FZ |
Freezing |
AIS |
| FZDZ |
Freezing Drizzle |
AIS |
| FZFG |
Freezing Fog |
AIS |
| FZL |
Freezing Level |
AIS |
| FZRA |
Freezing Rain |
AIS |
| G |
Gravity |
|
| G |
Green |
AIS |
| G/A |
Ground-to-air |
ICAO |
| G/A/G |
Ground-to-air and air-to-ground |
ICAO |
| GA |
Go ahead, resume sending (to be used in AFS as a procedure signal) |
ICAO |
| GA |
General Aviation |
CAR 1988 |
| GAAP |
General Aviation Aerodrome Procedures |
AIS |
| GAMET |
Area forecast for low-level flights |
ICAO |
| GAPAN |
Honourable Company of Air Pilots, Australia, Inc. |
|
| GBAS |
Ground Based Augmentation System |
|
| GCA |
Ground Controlled Approach |
AIS |
| GCN |
General Computing Network (operated by Airservices Australia) |
AIS |
| GDOP |
Geometric Dilution of Precision |
|
| GEN |
General |
AIS |
| GEO |
Geographic, true |
AIS |
| GES |
Ground Earth Station |
AIS |
| GFA |
The Gliding Federation of Australia |
|
| GFY |
Glider Flying |
AIS |
| GHA |
Ground handling agents |
|
| GIVD |
Gravity Induced Vestibular Dysfunction |
|
| GLD |
Glider |
AIS |
| GLOC |
Gravity Induced Loss of Consciousness |
|
| GLONASS |
Global Orbiting Navigation Satellite System (pronounced ‘GLO-NAS’) |
AIS |
| GM |
Guidance Material |
|
| GMC |
Ground Movement Chart (followed by name/title) |
AIS |
| GND |
Ground |
AIS |
| GNDCK |
Ground Check |
AIS |
| GNS |
Global Navigation System |
AIS |
| GNSS |
Global navigation satellite system |
ICAO/AIP |
| GP |
Guiding principles |
CAR 1998 |
| GP |
Glide Path |
ICAO/AIP |
| GP |
FLG Group Flashing (number) (used in conjunction with aerodrome lighting) |
AIS |
| GPI |
Glide Path Intercept |
AIS |
| GPS |
Global positioning system (see GNSS) |
|
| GPWS |
Ground proximity warning system |
|
| GR |
Hail |
AIS |
| GRAD |
Minimum Required Climb Gradient |
AIS |
| GRAS |
Ground Based Regional Augmentation System |
|
| GRASS |
Grass Landing Area |
AIS |
| GRIB |
Processed meteoroglogical data in the form of grid point values expressed in binary form (aeronautical meterological code) |
ICAO/AIP |
| GRVL |
Gravel |
AIS |
| GS |
Groundspeed |
AIS |
| GS |
Small Hail and/or Snow Pellets |
AIS |
| GSE |
Ground Support Equipment |
WATOG |
| GUND |
Geoid Undulation |
AIS |
| H24 |
Continuous day and night service |
AIS |
| HAA |
Height Above Aerodrome |
AIS |
| HAA |
Helicopter Association of Australia |
|
| HAAMC |
Head of Aircraft Airworthiness and Maintenance Control |
Aviation Law in Australia, 2004 edition |
| HAM |
Head of Aircraft Maintenance |
CASR Part 145 |
| HAMC |
Head of Aircraft Maintenance Control |
CASR Part 145 |
| HAPI |
Helicopter approach path indicator |
ICAO |
| HAT |
Height Above Threshold |
AIS |
| HBN |
Hazard Beacon |
AIS |
| HDF |
High frequency direction-finding station |
ICAO |
| HDG |
Heading |
AIS |
| HDS |
Hours of Daylight Saving |
AIS |
| HEL |
Helicopter |
AIS |
| HF |
Human Factors |
|
| HF |
High Frequency (3000 to 30,000 KHZ) |
AIS |
| HFEM |
Human Factor and Error Management System |
|
| HGFA |
Hang Gliding Federation of Australia Inc |
|
| HGS |
Heads-up Guidance System |
|
| HGT |
Height, Height Above |
AIS |
| HIAL |
High Intensity Approach Lighting |
AIS |
| HIOL |
High Intensity Obstacle Lights |
AIS |
| HIRL |
High Intensity Runway Lighting |
AIS |
| HJ |
Sunrise to Sunset |
AIS |
| HLDG |
Holding |
AIS |
| HLS |
Helicopter Landing Site |
AIS |
| HMI |
Human-machine Interface |
|
| HN |
Sunset to Sunrise |
AIS |
| HO |
Service available to meet operational requirements |
AIS |
| HOFO |
Head of Flying Operations |
|
| HOO |
Head of Operations |
|
| HOSP |
Hospital Aircraft |
|
| HOTAS |
Head of Training and Standards |
AIS |
| HOTC |
Head of Training and Checking |
|
| HP |
Horse Power |
|
| HPA |
HectoPascal |
|
| HR |
Hours |
AIS |
| HS |
Homestead |
AIS |
| HS |
Service available during hours of scheduled operations |
AIS |
| HSL |
Hold Short Lights |
AIS |
| HUD |
Head Up Display |
AIS |
| HURCN |
Hurricane |
|
| HVDF |
High and very high frequency direction finding stations (at the same location) |
AIS |
| HVY |
Heavy |
AIS |
| HVY |
Heavy (used to indicate the intensity of WX phenomena, eg HVY RA = heavy rain) |
AIS |
| HX |
No specific working hours |
AIS |
| HYR |
Higher |
AIS |
| HZ |
Haze |
AIS |
| HZ (hz) |
Hertz |
AIS |
| HZS |
Horizontal Surface |
AIS |
| IA |
Inspection authorisation |
AIS |
| IAC |
Instrument approach chart (followed by name/title) |
FAR |
| IAF |
Initial Approach Fix |
ICAO/AIP |
| IAL |
Instrument Approach and Landing Chart |
AIS |
| IAO |
In and out of clouds |
AIS |
| IAP |
Instrument Approach Plate |
AIS |
| IAR |
Intersection of air routes |
|
| IAS |
Indicated air speed |
ICAO |
| IATA |
International Air Transport Association |
ICAO |
| IAW |
In Accordance With |
|
| IAWP |
Initial Approach Way-point |
|
| IBN |
Identification Beacon |
AIS |
| IC |
Ice Crystals (MET code) |
AIS |
| ICA |
Instructions for continuing airworthiness (issued by manufacturer or designer) |
AIS |
| ICAO |
International Civil Aviation Organization |
CAR 1998 |
| ICE |
Icing, Ice |
ICAO |
| ICUS |
In-command Under Supervision |
AIS |
| ID |
Identifier, identify |
|
| IDENT |
Identification |
AIS |
| IF |
Instrument Flight |
AIS |
| IF |
Intermediate Approach Fix |
|
| IFF |
Identification Friend/Foe |
AIS |
| IFR |
Instrument flight rules |
AIS |
| IFSD |
In-flight Shutdown |
ICAO/AIP |
| IG |
Implementation Group |
|
| IGA |
International general aviation |
|
| ILS |
Instrument Landing System |
/AIPICAO |
| IM |
Inner Marker |
AIS |
| IMC |
Instrument meteorological conditions (other than VMC) |
AIS |
| IMC |
Indirect Maintenance Cost |
CAR 1988 |
| IMG |
Immigration |
WATOG |
| IMI |
Interrogation sign |
AIS |
| IMPR |
Improve, Improving, Improvement |
ICAO |
| IMT |
Immediate, Immediately |
AIS |
| INA |
Initial approach |
AIS |
| INBD |
Inbound |
ICAO |
| INC |
In Cloud |
AIS |
| INCERFA |
Uncertainty Phase |
AIS |
| INFO |
Information |
AIS |
| INOP |
Inoperative |
AIS |
| INP |
If not possible |
AIS |
| INPR |
In progress |
ICAO |
| INS |
Inertial Navigation System |
ICAO |
| INSTL |
Install, Installed, Installation |
AIS |
| INSTR |
Instrument |
AIS |
| INT |
Intersection |
AIS |
| INTER |
Intermittent, Intermittently (meteorological) |
AIS |
| INTL |
International |
AIS |
| INTRG |
Interrogator |
AIS |
| INTRP |
Interrupt, Interruption, Interrupted |
AIS |
| INTSF |
Intensify, Intensifying |
AIS |
| INTST |
Intensity |
AIS |
| IoA |
Instrument of appointment |
AIS |
| IOC |
Indirect Operating Cost |
CAR 1988 |
| IOE |
Initial Operational Experience |
WATOG |
| IPC |
Illustrated Parts Catalogue |
|
| IR |
Ice on runway |
WATOG |
| IREX |
Instrument Training Examination |
ICAO |
| IRM |
Immediately Reportable Matters |
ATSB |
| IRS |
Internal Reporting System |
|
| ISA |
International Standard Atmosphere |
|
| ISB |
Independent Sideband |
AIS |
| ISIM |
Integrated Safety Investigation Methodology |
CASA |
| ISO9000 |
International Organization for Standardization |
|
| ISOL |
Isolated |
|
| ITT |
Interstage Turbine Temperature |
AIS |
| IWI |
Illuminated Wind Indicator |
|
| IWP |
Intermediate Way-point |
AIS |
| J-BAR |
Jet Barrier |
AIS |
| JAA |
Joint Aviation Authorities (of Europe) |
AIS |
| JAR |
Joint Aviation Requirements (of the European JAA) |
|
| JAR-OPS |
JAR Operations |
AIS |
| JTSO |
Joint Technical Standard Order |
AIS |
| JTST |
Jet Stream |
AIS |
| KDR |
Knowledge Deficiency Report |
AIS |
| KG (kg) |
Kilograms |
AIS |
| KHZ (kHz) |
Kilohertz |
|
| KM (km) |
Kilometers |
AIS |
| KMH (km/h) |
Kilometers per hour |
AIS |
| KPA (kPa) |
Kilopascals |
AIS |
| KT (kt) |
Knots |
AIS |
| KW (kw) |
Kilowatts |
AIS |
| L |
Left (runway identification) |
AIS |
| L |
Locator (see LM, LO) |
AIS |
| LAAS |
Local Area Augmentation System |
AIS |
| LAHSO |
Land and Hold Short Operations |
AIS |
| LAME |
Licensed Aircraft Maintenance Engineer |
|
| LAN |
Inland |
AIS |
| LAT |
Latitude |
CASR Part 66 |
| LDA |
Landing distance available |
AIS |
| LDG |
Landing |
AIS |
| LDI |
Landing Direction Indicator |
ICAO/AIP |
| LDP |
Landing decision point |
AIS |
| LEN |
Length |
AIS |
| LF |
Low Frequency (30 to 300 KHZ) |
ICAO |
| LGT |
Light, Lighting |
AIS |
| LGTD |
Lighted |
AIS |
| LIH |
Light Intensity High |
AIS |
| LIL |
Light Intensity Low |
AIS |
| LIM |
Light Intensity Medium |
AIS |
| LIOL |
Low Intensity Obstacle Lights |
AIS |
| LIRL |
Low Intensity Runway Lights |
AIS |
| LJR |
Low Jet Route |
AIS |
| LL |
Lower Limit |
AIS |
| LLN |
Low-level Navigation (by the MIL) |
AIS |
| LLO |
Low Level Operations (by the MIL) |
AIS |
| LLZ |
Localizer |
AIS |
| LM |
Locator (middle) |
AIS |
| LMT |
Local mean time |
AIS |
| LO |
Locator (outer) |
AIS |
| LOC |
Locally, Location, Located, Local |
AIS |
| LOE |
Lane of Entry |
AIS |
| LONG |
Longitude |
AIS |
| LOSA |
Line Operations Safety Audit |
AIS |
| LPT |
Liquid Penetrant Test |
AIS |
| LRCS |
Long-range communication system |
|
| LRG |
Long Range |
|
| LRI |
Line Replaceable Item |
FAR |
| LRNS |
Long-range navigation system |
AIS |
| LRU |
Line Replaceable Unit |
WATOG |
| LSA |
Light Sport Aircraft |
FAR |
| LSALT |
Lowest safe altitude |
WATOG |
| LSd |
CASA’s Legal Services Division |
|
| LTD |
Limited |
|
| LUL |
Lowest Usable Level |
CASA |
| LV |
Light and Variable (relating to wind) |
AIS |
| LVE |
Leave, Leaving |
AIS |
| LVL |
Level |
AIS |
| LYR |
Layer, Layered |
AIS |
| M |
Mach number (followed by figures ie .02 = Mach .02) |
AIS |
| M (m) |
Metres (preceded by figures) |
AIS |
| M/E |
Multi-engine |
AIS |
| MAAT |
Manual Authoring and Assessment Tool |
CASA |
| MAE |
Men and Equipment |
|
| MAG |
Magnetic |
|
| MAHWP |
Missed Approach Holding Way-point |
AIS |
| MAINT |
Maintenance |
AIS |
| MAN |
Manual |
AIS |
| MAP |
Aeronautical Maps and Charts |
AIS |
| MAP |
Manifold Air Pressure |
AIS |
| MAPT |
Missed Approach Point |
AIS |
| MAR |
At Sea |
|
| MAUW |
Maximum All Up Weight |
AIS |
| MAWP |
Missed Approach Waypoint |
AIS |
| MAX |
Maximum |
|
| MBST |
Microburst |
AIS |
| MBZ |
Mandatory Broadcast Zone |
AIS |
| MCC |
Multi-crew Co-ordination |
AIP |
| MCM |
Maintenance control manual |
CASA |
| MCQFS |
Manual of criteria for the qualification of flight simulators ICAO Doc 9625-AN/938 |
|
| MCUR |
Mean Cycles Between Unscheduled Removals |
CASR Part 145 |
| MCW |
Modulated Continuous Wave |
CASR Part 60 |
| MDA |
Minimum Descent Altitude |
WATOG |
| MDF |
Medium Frequency Direction Finding Station |
AIS |
| MDR |
Major Defect Report |
AIS |
| MEA |
Minimum En-route Altitude |
AIS |
| MED |
Medical |
CAR 1988 |
| MEL |
Minimum equipment list |
AIS |
| MERSITAB |
Manufacturing, Engineering and Related Services Industry Training Advisory Body |
AIS |
| MET |
Meteorological, Meteorology |
ICAO |
| MET |
REPORT Aviation routine weather report |
CASR Part 66 |
| METAR |
Aviation routine weather report (in aeronautical meteorological code) |
AIS |
| METRAD |
MET Radar |
AIS |
| MF |
Medium Frequency (300 to 3000 KHZ) |
AIS |
| MHZ (mhz) |
Megahertz |
AIS |
| MIFG |
Shallow Fog |
AIS |
| MIL |
Military |
AIS |
| MIL-STD |
Military Standard |
AIS |
| MIN |
Minutes |
AIS |
| MIOL |
Medium Intensity Obstacle Lights |
|
| MIRL |
Medium Intensity Runway Lights |
AIS |
| MISC |
Miscellaneous |
AIS |
| MKR |
Marker Radio Beacon |
AIS |
| MLJ |
Military Low Jet |
AIS |
| MLJR |
Military Low Jet Route |
AIS |
| MLS |
Microwave Landing System |
AIS |
| MLW |
Maximum Landing Weight |
AIS |
| MM |
Middle Marker |
AIS |
| MMEL |
Master minimum equipment list |
AIS |
| MNM |
Minimum |
AIS |
| MNT |
Monitor, Monitoring, |
ICAO |
| MNTN |
Maintain, Maintained, Maintaining |
AIS |
| MOA |
Military Operating Area |
AIS |
| MOC |
Minimum obstacle clearance (required) |
AIS |
| MOD |
Moderate, Moderately |
AIS |
| MOD |
Moderate (used to indicate the intensity of WX phenomena, interference or static reports, eg MOD RA = moderate rain). |
ICAO/AIP |
| MON |
Above Mountains |
AIS |
| MOPS |
Minimum Operational Performance Standards |
AIS |
| MOS |
Manual of Standards |
AIS |
| MOU |
Memorandum of understanding |
AIS |
| MOV |
Move, Moved, Moving, Movement |
CAR 1998 |
| MOWP |
Method of Working Plan |
|
| MPD |
Maintenance Planning Data |
AIS |
| MPI |
Magnetic Particle Inspection |
AIS |
| MPL |
Multi-crew Pilot Licence |
ATA/FAR |
| MPS |
Metres per Second |
|
| MPT |
Magnetic Particle Inspection Technician |
ICAO Annex 1 ‘Personnel Licensing’ |
| MRB |
Maintenance Review Board |
AIS |
| MRBR |
Maintenance Review Board Report |
|
| MRG |
Medium Range |
ATA/FAR |
| MRO |
Maintenance, repair and overhaul |
|
| MRP |
ATS/MET Reporting Point |
AIS |
| MS |
Minus |
CASR Part 145 |
| MSA |
Minimum sector altitude |
AIS |
| MSAS |
Multi-function Transport Satellite (MTSAT) Satellite-based Augmentation System |
AIS |
| MSDS |
Material Safety Data Sheets |
AIP |
| MSG |
Message |
|
| MSG |
Maintenance Steering Group |
|
| MSG-3 |
Maintenance Steering Group Logic Process |
AIS |
| MSI |
Maintenance Significant Item |
ATA/FAR |
| MSL |
Mean Sea Level |
|
| MSOS |
Maintenance specific operation specification |
WATOG |
| MSSR |
Monopulse Secondary Surveillance Radar |
AIS |
| MT |
Mountain |
CASR Part 145 |
| MTBF |
Mean Time Between Failure |
AIS |
| MTBR |
Mean Time Between Removals |
AIS |
| MTBUR |
Mean Time Between Unscheduled Removals |
WATOG |
| MTO |
Maintenance training organisation |
WATOG |
| MTOW |
Maximum take-off weight |
WATOG |
| MTP |
Maximum Tyre Pressure |
CASR Part 147 |
| MTSAT |
Multi-function Transport Satellite |
AIP |
| MTTF |
Mean Time To Failure |
AIS |
| MTTR |
Mean Time To Repair |
|
| MTTUR |
Mean Time To Unscheduled Removal |
WATOG |
| MTUR |
Special Term For Data Transmittal |
WATOG |
| MTW |
Mountain waves |
WATOG |
| MVA |
Minimum Vector Altitude |
WATOG |
| MWO |
Meteorological Watch Office |
AIS |
| MX |
Mixed type of ice formation (white and clear) |
AIS |
| N |
North, North Latitude |
AIS |
| N1 |
Gas Generator Speed |
AIS |
| N2 |
Second Stage Turbine Speed |
AIS |
| NAA |
National Airworthiness Authority (for a country other than Australia) |
|
| NAD |
Non-acqueous Developer |
|
| NAIPS |
National aeronautical information processing system |
CAR 1998 |
| NANDTB |
National Aerospace Non-destructive Testing Board |
|
| NANU |
Notice Advisory to NavStar Users |
AIP |
| NAP |
Noise Abatement Procedures |
|
| NAS |
National Airspace System |
|
| NASC |
National AIS System Centre |
AIS |
| NAT |
NAVAID Training |
AIS |
| NAV |
Navigation |
|
| NAVAID |
Navigation Aid |
AIS |
| NAWD |
Non-acqueous Wet Developer |
AIS |
| NB |
Northbound |
AIS |
| NBFR |
Not Before |
|
| NC |
No Change |
AIS |
| NDB |
Non-directional Radio Beacon |
AIS |
| NDI |
Non-destructive inspection |
AIS |
| NDT |
Non-destructive testing |
AIS |
| NE |
Northeast |
AIS |
| NEG |
Negative, No. Permission not granted or, That is not correct |
CAR 1988 |
| NFRM |
Notice of Final Rule Making |
AIS |
| NG |
Gas Generator Speed |
AIS |
| NGT |
Night |
CASA |
| NIL |
None |
|
| NM |
Nautical Miles |
AIS |
| NML |
Normal |
AIS |
| NNE |
North North-East |
AIS |
| NNW |
North North-West |
AIS |
| NOF |
International NOTAM Office |
AIS |
| NOSIG |
No Significant Change |
AIS |
| NOTAM |
Notice To Airmen |
AIS |
| NOZ |
Normal Operating Zone |
AIP |
| NP |
Propeller Speed |
AIS |
| NPA |
Non-precision approach (procedures at aerodromes) |
AIS |
| NPC |
Notice of proposed change (consultation for amendment to a MOS) |
|
| NPRM |
Notice of proposed rule making |
AIS |
| NSC |
Nil Significant Cloud |
CAR 1998 |
| NTA |
No TAF Amendment |
CASA |
| NTL |
National |
AIS |
| NTS |
Negative Torque Sensing System |
AIS |
| NTSB |
National Transportation Safety Board (of the USA) |
AIS |
| NTZ |
No-transgression zone |
|
| NVD |
Night Vision Device |
|
| NVED |
Night Vision Enhancement Devices |
AIP/ICAO |
| NVET |
National vocational education and training |
|
| NVFR |
Night Visual Flight Rules |
|
| NVG |
Night Vision Goggles (by the MIL) |
CASR Part 66 |
| NVIS |
Night Vision Imaging Systems |
|
| NW |
North-West |
AIS |
| NXT |
Next |
|
| NZ |
New Zealand |
AIS |
| NZ CAA |
New Zealand Civil Aviation Authority |
AIS |
| NZS |
New Zealand Standard |
|
| O/R |
On Request |
|
| OAR |
Office of Airspace Regulation |
|
| OAT |
Outside Air Transport |
|
| OAT |
Outside Air Temperature |
CASA |
| OBPR |
Office of Best Practice Regulation |
|
| OBPR |
Office of Best Practice Regulation |
|
| OBS |
Omni Bearing Selector |
|
| OBS |
Observe, Observed, Observation |
|
| OBSC |
Obscure, Obscured, Obscuring |
|
| OBST |
Obstacle |
|
| OBSTR |
Obstruction |
|
| OC |
Operating Certificate |
|
| OCA |
Obstacle Clearing Altitude |
|
| OCA |
Oceanic Control Area |
|
| OCC |
Occulting (light) |
|
| OCH |
Obstacle Clearance Height |
|
| OCNL |
Occasional, Occasionally |
|
| OCTA |
Outside Control Area |
|
| OCTR |
Outside Control Zone |
|
| OEI |
One Engine Inoperative |
AIS |
| OEM |
Original Equipment Manufacturer |
|
| OFZ |
Obstacle Free Zone |
|
| OHD |
Overhead |
|
| OHS |
Occupation Health and Safety |
|
| OHSMS |
Occupational Health and Safety Management Systems |
|
| OIS |
Obstacle Identification Surface |
|
| OLC |
Office of Legal Counsel |
|
| OLDI |
On-line Data Interchange |
|
| OLS |
Obstacle Limitation Surface |
|
| OM |
Operations Manual |
|
| OM |
Outer Marker |
|
| OPA |
Opaque, white type of ice formation |
|
| OPC |
Office of Parliamentary Counsel |
|
| OPMET |
Operational Meteorological |
|
| OPN |
Operational Notification Message (message type designator) |
|
| OPN |
Open, Opening, Opened |
|
| OPR |
Operator, Operate, Operative, Operating, Operational |
|
| OPS |
Operations |
|
| OSIP |
Overhaul and Special Inspections Periods |
|
| OT |
Other Times |
CASA |
| OTAC |
Overseas Territories Aviation Circulars |
Air Safety Support International (UK) |
| OTAR |
Overseas Territories Aviation Requirements |
Air Safety Support International (UK) |
| OTLK |
Outlook (used in Sigmet messages for volcanic ash and tropical cyclones) |
Air Safety Support International (UK) |
| OTP |
On Top |
Air Safety Support International (UK) |
| OUBD |
Outboard |
|
| OVC |
Overcast |
|
| OW |
Over Water |
|
| P.. |
Prohibited Area (followed by identification) |
|
| PA |
Precision Approach |
|
| PAL |
Pilot Activated Lighting |
AIS |
| PANS |
Procedures for Air Navigation Services |
|
| PANS-OPS |
Procedures for Air Navigation Services – Aircraft Operations ICAO Doc 8168 Vol I and II |
AIS |
| PAPI |
Precision Approach Path Indicator |
AIS |
| PAR |
Precision Approach Radar |
ICAO |
| PARL |
Parallel |
AIS |
| PATC |
Precision Approach Terrain Chart (followed by name/title) |
AIS |
| PAX |
Passengers |
AIS |
| PBM |
Power Plant Build-Up Manual |
AIS |
| PC |
Personal Computer |
AIS |
| PCATD |
Personal Computer-based Aviation Training Device |
WATOG |
| PCD |
Proceed, Proceeding |
|
| PCL |
Pilot Controlled Lighting |
|
| PCN |
Pavement classification number |
AIS |
| PCT |
Practical consolidation training |
AIS |
| PDC |
Pre-Departure Clearance |
ICAO/AIP |
| PDO |
Product distribution organisation |
CASR Part 66 |
| PDOP |
Positional Dilution of Precision |
AIS |
| PDSE |
Pre-departure Service Check |
CASR Part 144 |
| PEC |
Pressure Error Correction |
|
| PERM |
Permanent |
|
| PFC |
Porous Friction Course |
AIS |
| PFR |
Preferred Route |
AIS |
| PH |
Public Holiday |
AIS |
| PIB |
Pre-flight information bulletin |
AIS |
| PIC |
Pilot-in-command |
AIS |
| PICUS |
Pilot-in-Command Under Supervision |
ICAO/AIP |
| PIFR |
Private IFR rating |
CAR 1988 |
| PILS |
Practice ILS |
|
| PIREP |
Pilot Reports |
CAR 1988 |
| PJE |
Parachute Jumping Exercise |
AIS |
| PL |
Ice Pellets |
WATOG |
| PLN |
Flight Plan |
AIS |
| PLVL |
Present Level |
CASA |
| PMP |
Primary Maintenance Process |
AIS |
| PN |
Prior Notice Required |
AIS |
| PNR |
Point of No Return |
WATOG |
| PO |
Dust Devils |
AIS |
| POB |
Persons on Board |
AIS |
| POH |
Pilot Operating Handbook |
|
| POSS |
Possible |
AIS |
| PPI |
Plan Position Indicator |
|
| PPL |
Private Pilot Licence |
AIS |
| PPR |
Prior Permission Required |
AIS |
| PPS |
Precise Positioning Service |
CAR 1988 |
| PPSN |
Present Position |
AIS |
| PRD |
Prohibited, Restricted and Danger Areas |
|
| PRFG |
Aerodrome Partially Covered by Fog (MET code) |
AIS |
| PRI |
Primary |
AIS |
| PRKG |
Parking |
AIS |
| PRM |
Precision Runway Monitoring |
AIS |
| PRM |
Precision runway monitoring |
AIS |
| PROB |
Probable, Probability |
AIS |
| PROC |
Procedure |
AIP |
| PROV |
Provisional |
AIS |
| PS |
Plus |
AIS |
| PSG |
Passing |
AIS |
| PSN |
Position |
AIS |
| PSP |
Pierced Steel Plank |
AIS |
| PSR |
Primary Surveillance Radar |
AIS |
| PSYS |
Pressure System(s) |
AIS |
| PTBL |
Portable |
AIS |
| PTN |
Procedure Turn |
AIS |
| PTT |
Push To Talk |
AIS |
| PVT |
Private |
AIS |
| PWR |
Power |
|
| QDM |
Magnetic Heading (zero wind) |
AIS |
| QDR |
Magnetic Bearing |
AIS |
| QEC |
Quick Engine Change Unit |
AIP |
| QFE |
An altimeter set to QFE will read zero when the aircraft is on the runway |
AIP |
| QMS |
Quality Management System |
WATOG |
| QNH |
Altimeter subscale setting to obtain elevation or altitude |
|
| QTE |
True Bearing |
|
| QTG |
Qualification test guide |
AIS |
| QUAD |
Quadrant |
AIP |
| R |
Red |
|
| R |
Right (runway system identification) |
AIS |
| R…. |
Restricted Area (followed by number) |
AIS |
| R/T |
Radio Telephone |
AIS |
| RA |
Rain |
AIS |
| RA-Aus |
Recreational Aviation Australia |
|
| RAAA |
Recreational Aviation Association of Australia |
AIS |
| RAAO |
Recreational Aviation Administrative Organisation |
|
| RAC |
Rules of the Air and Air Traffic Services |
|
| RAD |
Radius |
|
| RAeS |
Royal Aeronautical Society |
AIS |
| RAFC |
Regional Area Forecast Centre |
AIS |
| RAG |
Ragged |
|
| RAG |
Runway Arresting Gear |
AIS |
| RAI |
Runway Alignment Indicator |
AIS |
| RAIM |
Receiver Autonomous Integrity Monitoring |
AIS |
| RAM |
Repair and Maintenance |
AIS |
| RAPAC |
Regional Airspace Users Advisory Committee |
|
| RAPIC |
Radar Picture (MET) |
|
| RAS |
Radar Advisory Service |
|
| RASF |
Regional Aviation Safety Forum |
|
| RAT |
RAM Air Turbine |
AIS |
| RCA |
Reach Cruising Altitude, |
AIS |
| RCA |
Request For Corrective Action |
|
| RCC |
Rescue Coordination Centre |
AIS |
| RCH |
Reach, Reaching |
AIS |
| RCL |
Runway Centre Line |
AIS |
| RCLL |
Runway Centre Line Lights |
AIS |
| RCLM |
Runway Centre Line Marking |
AIS |
| RDL |
Radial |
AIS |
| RDO |
Radio |
AIS |
| RDS |
Runway Distance Supplement |
|
| RE… |
Recent (used to qualify weather phenomena, eg RERA = recent rain) |
CASA |
| REC |
Receive, Receiver, Received |
AIS |
| REDL |
Runway Edge Lights |
AIS |
| REF |
Reference to… Refer to… |
AIS |
| REG |
Registration |
AIS |
| RENL |
Runway End Lights |
AIS |
| REP |
Report, Reported, Reporting, Reporting Point |
AIS |
| REQ |
Request, Requested |
AIS |
| RERTE |
Re-route |
AIS |
| RES |
Reserve Fuel |
AIS |
| RESA |
Runway end safety area |
AIS |
| RESTR |
Restrictions |
AIS |
| REV |
Review |
ICAO/AIP |
| RFACA |
Royal Federation of Aero Clubs of Australia |
AIS |
| RFC |
Request for change |
AIS |
| RFC |
Regional Forecasting Centre (Met) |
|
| RFFS |
Rescue and Fire Fighting Services |
|
| RH |
Radio Height |
AIS |
| RHC |
Right-hand Circuit |
CASA |
| RIF |
Reclearance in Flight |
AIS |
| RIFTO |
Restricted Instrument Flight Take-off |
AIS |
| RIS |
Regulation Impact Statement |
OBPR |
| RIS |
Radar information service |
|
| RL |
Report Leaving |
ORR |
| RLA |
Relay to |
AIP/ICAO |
| RLLS |
Runway Lead-in Lighting |
AIS |
| RMIT |
Royal Melbourne Institute of Technology |
AIS |
| RMK |
Remark(s) |
AIS |
| RMS |
Root Mean Square |
|
| RNAV |
Area navigation |
AIS |
| RNP |
Required navigation performance |
|
| RO |
Registered operator |
AIP |
| ROBEX |
Regional OPMET Bulletin Exchanges |
|
| ROC |
Rate of Climb |
CASR Part 43 |
| ROD |
Rate of Descent |
AIS |
| ROFOR |
Route Forecast (in aeronautical meteorological code) |
AIS |
| RPA |
Rules and practices for aerodromes |
AIS |
| RPI |
Radar Position Indicator |
AIS |
| RPI |
Regulatory Performance Indicator |
CAR 1988 |
| RPI |
Runway Point of Intercept |
AIS |
| RPL |
Recognition of prior learning |
CAR 1988 |
| RPM |
Revolutions Per Minute |
AIS |
| RPT |
Regular public transport |
CASR Part 66 |
| RQ |
Require(d) |
|
| RQMNTS |
Requirements |
CAR 1988 |
| RR |
Report Reaching |
AIS |
| RRM |
Routine Reportable Matters |
AIS |
| RSC |
Rescue Sub-Centre |
CASA |
| RSCD |
Runway Surface Condition |
CASA |
| RSP |
Responder Beacon |
AIS |
| RSR |
En route Surveillance Radar |
AIS |
| RTB |
Return to Base |
AIS |
| RTCA |
Radio Technical Commission for Aeronautics |
CASA |
| RTE |
Route |
|
| RTF |
Radio Telephone |
|
| RTHL |
Runway Threshold Light(s) |
AIS |
| RTIL |
Runway Threshold Identification Lights |
AIS |
| RTN |
Return, Returned, Returning |
AIS |
| RTO |
Rejected take-off |
AIS |
| RTO |
Registered training organisation |
AIS |
| RTS |
Return to Service |
AIP |
| RTZL |
Runway Touchdown Zone Light(s) |
CASR Part 147 |
| RVR |
Runway visual range |
AIS |
| RVSM |
Reduced Vertical Separation Minimum |
AIS |
| RWS |
Runway Strip |
AIP/ICAO |
| RWY |
Runway |
ICAO/CAR 1988 |
| S |
South, South Latitude |
AIS |
| S-I |
Straight-In |
AIS |
| S/E |
Single-engine |
AIP |
| SA |
Sand |
WATOG |
| SA |
Selective Availability |
|
| SA |
Situation Awareness |
AIS |
| SAAA |
Sport Aircraft Association of Australia |
|
| SAL |
Supplementary Airline Licence |
|
| SALR |
Saturated Adiabatic Lapse Rate |
|
| SALS |
Simple Approach Lighting System |
AIS |
| SAR |
Search and Rescue |
|
| SARPs |
Standards and Recommended Practices |
ICAO |
| SARTIME |
Time search action required |
AIS |
| SARWATCH |
Search and Rescue Watch |
ICAO |
| SATCOM |
Satellite Communication |
|
| SB |
Service Bulletin |
|
| SB |
Southbound |
AIS |
| SBAS |
Satellite Based Augmentation System |
AIS |
| SC |
Stratocumulus |
AIS |
| SCC |
Standards Consultative Committee |
|
| SCP |
Safety Critical Personnel |
AIS |
| SCT |
Scattered (meteorological) |
CASA |
| SDBY |
Standby |
|
| SDC |
Standard Departure Clearance |
AIS |
| SDR |
Service difficulty report |
AIS |
| SE |
South East |
AIS |
| SEA |
Sea (used in connection with sea-surface temperature and state of the sea) |
CAR 1998 |
| SEACO |
Single engine aircraft only |
AIS |
| SEC |
Seconds |
AIS |
| SECN |
Section |
|
| SECT |
Sector |
AIS |
| SELCAL |
Selective Calling System |
AIS |
| SER |
Service, Servicing, Served |
AIS |
| SEV |
Severe (used eg to qualify icing and turbulence report) |
AIS |
| SFC |
Surface |
AIS |
| SFL |
Sequenced Flashing Lights |
AIS |
| SG |
Snow Grains |
AIS |
| SH… |
Showers (followed by RA=rain, SN=snow, PL=ice pellets, GR=hail, GS=small hail and/or snow pellets or combinations thereof, eg, SHRASN = showers of rain and snow) |
AIS |
| SHF |
Super High Frequency (3,000 to 30,000 MHZ) |
AIS |
| SHP |
Shaft Horse Power |
AIS |
| SID |
Standard instrument departure |
AIS |
| SIF |
Selective Identification |
|
| SIG |
Significant |
ICAO/AIP |
| SIGMET |
Information concerning en route weather phenomena which may affect the safety of aircraft operations |
AIS |
| SIL |
Service Information Letter |
AIS |
| SIMUL |
Simultaneous, or Simultaneously |
AIS |
| SKC |
Sky Clear |
|
| SKED |
Schedule, Scheduled |
AIS |
| SL |
Service Letter |
AIS |
| SLP |
Speed Limiting Point |
AIS |
| SLW |
Slow, Slowly |
|
| SM |
Safety Manager |
AIS |
| SMC |
Surface Movement Control |
AIS |
| SMR |
Surface Movement Radar |
|
| SMS |
Safety management system |
AIS |
| SN |
Snow |
AIS |
| SNOWTAM |
A special series NOTAM notifying the presence or removal of hazardous conditions due to snow, ice, slush or standing water associated with snow, slush and ice on the movement area |
CAR 1998 |
| SOC |
Start of Climb |
AIS |
| SOE |
Schedule of experience |
AIS |
| SOM (SoM) |
System of Maintenance |
AIS |
| SOPs |
Standard Operating Procedures |
CAR 1988 |
| SOR |
Summary of responses |
CAR 1998 |
| SOT |
Start of TORA (take-off) |
|
| SP |
Single Pilot |
CASA |
| SPA |
Sport Aviation |
AIS |
| SPECI |
Aviation Special Weather (in aeronautical meteorological code) |
AIS |
| SPFIB |
Specific Preflight Information Bulletin |
AIS |
| SPOT |
Spotwind |
AIS |
| SPS |
Standard Positioning Service |
AIS |
| SQ |
Squall |
AIS |
| SR |
Sunrise |
|
| SRB |
Safety Review Board |
AIS |
| SRD |
Standard Radar Departure |
AIS |
| SRG |
Short Range |
|
| SRM |
Structural Repair Manual |
AIS |
| SRR |
Search and Rescue Region |
AIS |
| SRY |
Secondary |
WATOG |
| SS |
Sandstorm |
AIS |
| SS |
Sunset |
AIS |
| SSB |
Single Sideband |
AIS |
| SSCRO |
Senate Standing Committee on Regulations and Ordinances |
AIS |
| SSE |
South South-East |
AIS |
| SSI |
Structural Significant Item |
|
| SSM |
System Schematics Manual |
AIS |
| SSR |
Secondary Surveillance Radar |
WATOG |
| SST |
Supersonic Transport |
WATOG |
| SSW |
South South-West |
AIS |
| ST |
Stratus |
AIS |
| STA |
Straight in Approach |
AIS |
| STAR |
Standard Arrival Route |
AIS |
| STAR |
Standard instrumental arrival |
AIS |
| STARs |
Standard terminal arrival routes |
AIP |
| STC |
Supplemental Type Certificate |
ICAO |
| STD |
Synthetic training device |
|
| STD |
Standard |
CASR Part 21 |
| STF |
Stratiform |
CASR Part 60 |
| STN |
Station |
AIS |
| STNR |
Stationary |
AIS |
| STODA |
Supplementary Take-off Distance |
AIS |
| STOL |
Short Take-off and Landing |
AIS |
| STS |
Status |
AIS |
| STWL |
Stopway Light(s) |
AIS |
| SUBJ |
Subject to |
AIS |
| SUP |
Supplement (AIP Supplement) |
AIS |
| SUPPS |
Regional Supplementary Procedures |
AIS |
| SVCBL |
Serviceable |
AIS |
| SVY |
Survey Operations |
AIS |
| SW |
South-West |
AIS |
| SWS |
Soft Wet Surface |
AIS |
| SWY |
Stopway |
AIS |
| T |
Temperature |
AIS |
| T-VASIS |
‘T’Visual Approach Slope Indicator System (pronounced ‘TEE-VAR-SIS’) |
AIS |
| TA |
Transition Altitude |
AIS |
| TA |
Traffic advisory |
AIS |
| TAAATS |
The Australian Advanced Air Traffic System |
AIS |
| TAAM |
Airservices Australia’s Total Airspace Airport and Aerodrome Modeller |
ICAO/AIP |
| TAC |
Terminal Area Chart |
|
| TACAN |
Tactical Air Navigation Aid |
AIS |
| TAF |
Aerodrome Forecast |
AIS |
| TAF |
Terminal Area Forecast |
AIS |
| TAIL |
Tailwind |
AIS |
| TAR |
Terminal Area Surveillance Area |
|
| TAS |
True Airspeed |
AIS |
| TAT |
Terminal Area Thunderstorm Service (meteorological term) |
AIS |
| TAWS |
Terrain awareness and warning system |
AIS |
| TAWS-B+ system |
A terrain awareness and warning system that is equipped with a visual display and complies with the requirements for Class B equipment expressed in TSO-C151, TSO-C151a or TSO-C151b. |
AIS |
| TAX |
Taxiing, Taxi |
CAO 20.18 |
| TBA |
To be advised |
CAO Part 20, Section 20.18, Issue 9 |
| TBO |
Time Between Overhauls |
AIS |
| TC |
Type Certificate |
AIS |
| TC |
Tropical Cyclone |
WATOG |
| TCAC |
Tropical Cyclone Advisory Centre |
AIS |
| TCAS |
Traffic alert and collision avoidance system |
CASA |
| TCDS |
Type certificate data sheet |
|
| TCH |
Threshold Crossing Height |
ICAO |
| TCO |
Training and Checking Organisation |
CASR Part 21 |
| TCTA |
Trans-continental Control Area |
AIS |
| TCU |
Towering Cumulus (met) |
|
| TDO |
Tornado |
AIS |
| TDZ |
Touchdown Zone |
AIS |
| TECR |
Technical Reason |
AIS |
| TEL |
Telephone |
AIS |
| TEM |
(Illustrated) Tool And Equipment Manual |
AIS |
| TEM |
Threat and Error Management |
AIS |
| TEMPO |
Temporary, Temporarily (meteorologically) |
WATOG |
| TERPs |
Terminal and En-route procedures |
|
| TFC |
Traffic |
AIS |
| TFR |
Terrain Following Radar (by the MIL) |
AIS |
| TGL |
Touch & Go Landing |
AIS |
| TGS |
Taxiing Guidance System |
AIS |
| THR |
Threshold |
AIS |
| THRU |
Through |
AIS |
| TIBA |
Traffic Information Broadcasts by Aircraft |
AIS |
| TIL |
Until |
AIS |
| TIP |
Until Past (place) |
AIS |
| TIS |
Time in service |
AIS |
| TKOF |
Take-off |
AIS |
| TLOF |
Touchdown and lift-off area |
|
| TLS |
Transponder Landing System |
AIS |
| TLW |
Time Limited WIP (work in progress) |
ICAO |
| TMA |
Terminal Control Area |
|
| TMG |
Track Made Good |
AIS |
| TNA |
Training Needs Analysis |
AIS |
| TNA |
Turn Altitude |
|
| TNH |
Turn Height |
|
| TNS |
Transitional Surface |
AIS |
| TOC |
Top of Climb |
AIS |
| TODA |
Take-off distance available |
AIS |
| TOP |
Cloud Top |
AIS |
| TORA |
Take-off run available |
ICAO |
| TOT |
Turbine Outlet Temperature |
AIS |
| TP |
Turning Point |
ICAO |
| TR |
Track |
|
| TRA |
Temporary Reserved Airspace |
AIS |
| TRAN |
Transition |
AIS |
| TRANS |
Transmits, Transmitter |
AIS |
| Trike |
A manned, powered hang-glider |
AIS |
| TRL |
Transition Level |
AIS |
| TROP |
Tropopause |
|
| TS… |
Thunderstorm (followed by RA=rain, SN=snow, PE=ice pellets, GR=hail, GS=small hail and/or snow pellets or combinations thereof, eg TSRASN = thunderstorm with rain and snow) |
AIS |
| TSI |
Time Since Installation |
AIS |
| TSO |
Technical Standard Order |
AIS |
| TSO |
Time Since Overhaul |
WATOG |
| TTF |
Trend Type Forecast |
|
| TTMRA |
Trans Tasman Mutual Recognition Agreement |
WATOG |
| TURB |
Turbulence |
|
| TWR |
Aerodrome Control Tower, Aerodrome Control |
AIS |
| TWY |
Taxiway |
AIS |
| TWYL |
Taxiway Link |
AIS |
| TYP |
Type of Aircraft |
AIS |
| TYPH |
Typhoon |
AIS |
| U/S |
Unserviceable |
AIS |
| UAB |
Until Advised By |
AIS |
| UAV |
Unmanned aerial vehicles |
AIS |
| UDF |
UHF Direction Finding Stations |
AIS |
| UFIT |
Uncontrolled Flight Into Terrain |
CASR Part 101 |
| UFN |
Until Further Notice |
AIS |
| UHDT |
Unable Higher Due Traffic |
|
| UHF |
Ultra High Frequency (300 to 3,000 MHZ) |
AIS |
| UIR |
Upper Flight Information Region |
AIS |
| UK |
United Kingdom |
AIS |
| UL |
Upper Limits |
AIS |
| UNA |
Unable |
|
| UNAP |
Unable to Approve |
AIS |
| UNICOM |
Universal Communications |
AIS |
| UNL |
Unlimited |
AIS |
| UNLC |
Unlicensed |
|
| UNREL |
Unreliable |
AIS |
| US FAR |
Federal Aviation Regulations (of the USA) |
AIS |
| USA |
United States of America |
|
| UTA |
Upper Control Area |
|
| UTC |
Coordinated Universal Time |
|
| V |
Velocity |
AIS |
| V1 |
Take-off Decision Speed |
AIS |
| V2 |
Take-off Safety Speed (Applicable to Larger Multi-engine Aircraft) |
|
| VA |
Volcanic Ash |
|
| VA |
Maximum Manoeuvring Speed |
|
| VAA-H |
Visual Approach Area – Helicopter |
AIS |
| VAAC |
Volcanic Ash Advisory Centre |
|
| VAC |
Visual Approach Chart (followed by name/title) |
|
| VAL |
In Valleys |
|
| VAR |
Magnetic Variation |
AIS |
| VASIS |
Visual Approach Slope Indicator System |
AIS |
| VC |
Vicinity of the aerodrome (followed by FG=fog, FC=funnel cloud, PO=dust/sand whirls, BLDU=blowing dust, BLSA=blowing sand or BLSN=blowing snow; eg, VCFG=vicinity fog |
AIS |
| VCY |
Vicinity |
AIS |
| VDF |
VHF Direction Finding Station |
AIS |
| VEC |
Visual En-route Chart |
AIS |
| VER |
Vertical |
AIS |
| VFE |
Flap Extension Speed |
AIS |
| VFR |
Visual flight rules |
AIS |
| VHF |
Very High Frequency (30 to 300 MHZ) |
|
| VHFCOM |
Very High Frequency Communications |
|
| VIA |
By way of… |
AIS |
| VIMD |
Maximum Drag Speed |
|
| VIP |
Very Important Person |
AIS |
| VIS |
Visibility |
|
| VLE |
Maximum Speed with Landing Gear Extended |
AIS |
| VLF |
Very Low Frequency (3 to 30 KHZ) |
AIS |
| VLJ |
Very Light Jet |
|
| VLO |
Landing Gear Operating |
AIS |
| VLO2 |
Landing Gear Operation Down |
|
| VLR |
Very Long Range |
|
| VMAN |
Visual Manoeuvre Speed |
|
| VMC |
Visual Meteorological Conditions |
AIS |
| VMC |
Minimum Control Speed |
|
| VMCA |
Minimum Control Airspeed Airborne (Red line speed) |
AIS |
| VMCG |
Minimum Control Airspeed on the Ground |
|
| VMO |
Maximum Structural Cruising Speed |
|
| VNAV |
Vertical Navigation |
|
| VNE |
Never Exceed Speed |
|
| VNO |
Normal Operating Speed |
ICAO |
| VOLMET |
Meteorological Information for Aircraft in Flight |
ICAO |
| VOR |
VHF Omni-directional Radio Range (OMNI) |
|
| VP |
Variable Pitch Propellers |
AIS |
| VR |
The speed at which the aircraft is rotated to lift off from the runway |
AIS |
| VRB |
Variable |
|
| VSI |
Vertical Speed Indicator |
|
| VSI |
Clean Stall Speed |
AIS |
| VSL |
Vertical speed limit |
|
| VSO |
Stalling speed, minimum steady flight speed in the landing configuration |
|
| VSO |
Stall speed with undercarriage and flap selected |
ICAO |
| VSSE |
Safe single-engine Speed |
CAR 1998 |
| VTC |
Visual Terminal Chart |
|
| VTOL |
Vertical take-off and landing |
|
| VTOSS |
Take-off Safely Speed |
AIS |
| VX |
Best Angle of Climb Speed |
ICAO |
| VXSE |
Best Single-engine Angle of Climb Speed |
|
| Vy |
Best Rate of Climb Speed |
|
| VYSE |
Best Single-engine Rate of Climb Speed (Blue line speed) |
|
| W |
Watt |
|
| W |
West, West Longitude |
|
| W |
White |
|
| W/V |
Wind Velocity |
AIS |
| WAAS |
Wide Area Augmentation System |
AIS |
| WAC |
World Aeronautical Chart ICAO 1:1,000,000 (followed by name/title) |
|
| WAFC |
World Area Forecast Centre |
|
| WAFS |
World Area Forecast System |
AIS |
| WATIR |
Weather and Terminal Information Reciter |
AIS |
| WATOG |
World Airlines Technical Operations Glossary |
|
| WB |
Westbound |
AIS |
| WBM |
Weight And Balance Manual |
|
| WDI |
Wind Direction Indicator |
AIS |
| WDSPR |
Widespread |
WATOG |
| WED |
Wednesday |
AIS |
| WEF |
With Effect From, Effective From |
AIS |
| WGS-84 |
World Geodetic System 1984 |
AIS |
| WI |
Within |
AIS |
| WID |
Width |
AIS |
| WIE |
With Immediate Effect, Effective Immediately |
AIS |
| WILCO |
Will Comply |
AIS |
| WIND |
Wind (used in connection with direction and speed) WINTEM Forecast upper wind and temperature at specified points (in aeronautical met code) |
AIS |
| WIP |
Work in Progress |
AIS |
| WKN |
Weaken, Weakening |
AIS |
| WM |
Wiring Manual |
AIS |
| WMO |
World Meteorological Organisation |
AIS |
| WNW |
West North-West |
WATOG |
| WO |
Without |
|
| WPT |
Way-point |
AIS |
| WRNG |
Warning |
AIS |
| WS |
Wind Shear |
AIS |
| WSW |
West South-West |
AIS |
| WT |
Weight |
AIS |
| WTSPT |
Water Spout |
AIS |
| WWW |
World Wide Web |
AIS |
| WX |
Weather |
AIS |
| X |
Cross |
AIS |
| XBAR |
Crossbar (of approach lighting system) |
AIS |
| XNG |
Crossing |
AIS |
| XS |
Atmospherics |
AIS |
| XSEC |
Extra Section |
AIS |
| Y |
Yellow |
AIS |
| YCZ |
Yellow Caution Zone |
WATOG |
| YR |
Your/s |
AIS |
| Z |
Coordinated Universal Time (in meteorological messages) |
AIS |
