Microsoft Flight Simulator – Useful Aviation Abbreviations And Acronyms

Some useful aviation/meteorological acronyms for general guidance and use in the aviation industry (for Microsoft Flight Simulator). This guild is based on Australian data, hence few Aussie acronyms.

Useful Aviation Abbreviations And Acronyms

A

  • A Amber
  • A/A Air to air
  • A/G Air-to-ground
  • AAA Amended meterological message
  • AAAA Aerial Application Association of Australia
  • 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
  • AAT Administrative Appeals Tribunal
  • ABAA Amateur Built Aircraft Acceptance
  • ABAS Aircraft Based Augmentation System
  • ABF Australian Ballooning Federation
  • ABI Advance boundary information
  • ABM Abeam
  • ABN Aerodrome beacon
  • ABT About
  • ABV Above…
  • AC Advisory Circular
  • AC Altocumulus (met)
  • ACA Australian Commonwealth Authority
  • ACARS Aircraft communication addressing and reporting system (pronounced ‘AY-CARS’)
  • ACAS Airborne Collision Avoidance System
  • ACC Area control centre
  • ACCID Initial notification of an aircraft accident
  • ACD Airways clearance delivery
  • ACFT Aircraft
  • ACJ-XXX Advisory Circular Joint (issued by the JAA, can be followed by a country code)
  • ACK Acknowledge
  • ACL Altimeter check location
  • ACN Aircraft classification number
  • ACN Australian company number
  • ACPT Accept, accepted
  • ACROB Acrobatics
  • Act the Civil Aviation Act 1988
  • ACT Active, activated, activity
  • AD Aerodrome
  • AD Airworthiness Directive
  • ADA Advisory area
  • ADAO Authorised Design Approval Organisation
  • ADC Aerodrome chart
  • ADDGM Aerodrome diagrams
  • ADDN Addition, additional
  • ADF Automatic Direction Finding (equipment)
  • ADF Australian Defence Force
  • ADIZ Air Defence Identification Zone
  • ADJ Adjacent
  • ADO Aerodrome office
  • ADQ Adequate aerodrome
  • 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)
  • ADS Automatic Dependent Surveillance
  • ADS-B Automatic Dependent Surveillance – Broadcast
  • ADS-C Automatic Dependent Surveillance – Contract
  • ADSU Automatic Dependent Surveillance Unit
  • ADZ Advise
  • AEB CASA’s Airworthiness Engineering Branch
  • AEP Aerodrome emergency plan
  • AER Authorised Engineering Representative
  • AERIS Automatic en route information service
  • AFAP Australian Federation of Air Pilots
  • AFCS Automatic flight control system
  • AFIL Flight notification: – filed in the air, or – indicating the position at which ATS services will first be required
  • AFIS Aerodrome flight information service
  • AFM Aircraft Flight Manual
  • AFM Yes, affirm, affirmative, that is correct
  • AFRU Aerodrome Frequency Response Unit (also known as a “beepback” unit)
  • AFS Aeronautical fixed service
  • AFT After
  • AFTN Aeronautical fixed telecommunication network
  • AFZ Australian fishing zone(s)
  • Ag Agriculture
  • AGA Again
  • AGD Attorney-General’s Department
  • AGL Above Ground Level
  • AH Artificial Horizon
  • AH After hours
  • AIC Aeronautical Information Circular
  • AIDC Air traffic services inter-facitility data communications
  • AIP Aeronautical Information Publication
  • 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
  • AIRC Aeronautical Information and Control
  • AIREP Air-Report
  • AIRMET Information in plain language concerning weather significant to light aircraft operations at or below 10,000FT
  • AIS Aeronautical Information Service
  • AL Approach Lights
  • ALA Aircraft Landing Area
  • ALA Aeroplane landing area
  • ALA Alighting area
  • ALA/HLS Aircraft Landing Area/Helicopter Landing Site
  • ALAEA Australian Licensed Aircraft Engineers Association
  • ALARP As Low as Reasonably Practical
  • ALERFA Alert phase
  • ALI Airworthiness Limitation Item
  • ALM Aircraft Landing Minima
  • ALR Alerting Message
  • ALRS Approach lighting system
  • ALS Approach Lighting System
  • ALT Altitude
  • ALTN Alternate, Alternating (light alternates in colour)
  • ALTN Alternate (aerodrome)
  • AMA Area minimum altitude
  • AMC Acceptable Means of Compliance
  • AMD Amend, Amended
  • AMDT Amendment (AIP amendment)
  • AME Aircraft Maintenance Engineer
  • AMM Aircraft Maintenance Manual
  • AMO Approved Maintenance Organisation
  • AMP Aircraft Maintenance Program
  • AMPA Authorised Maintenance Personnel Assessor
  • AMRD Australian Maintenance Requirements Document
  • AMS Aircraft Maintenance Specialist
  • AMSA Australian Maritime Safety Authority
  • AMSL Above Mean Sea Level
  • AMSS Aeronautical mobile satellite service
  • AMT Aircraft Maintenance Technician
  • ANA Air Navigation Act
  • ANC Aeronautical Chart 1:50,000 (followed by name/title)
  • ANCS Aeronautical navigation chart – small scale (followed by name/title and scale)
  • ANO Air Navigation Order
  • ANS Answer
  • ANTA Australian National Training Authority
  • ANVIS Aviator Night Vision Imaging Systems
  • AO Air Operator
  • AOC Air Operators Certificate
  • AOC Aerodrome Obstacle Chart (followed by name/title)
  • AOCM Air Operators Certification Manual
  • AOD Alcohol and Other Drug
  • AOG Aircraft On Ground
  • AOPA Aircraft Owners and Pilots Association
  • AP Airport
  • APAPI Abbreviated Precision Approach Path Indicator (pronounced ‘AY-PAPI’)
  • APCH Approach
  • APDC Aircraft Parking/Docking Chart (followed by name/title)
  • APF Australian Parachute Federation
  • APMA Australian Parts Manufacturer Approval
  • APN Apron
  • APP Approach Control
  • APRX Approximate, Approximately
  • APSG After Passing
  • APU Auxillary power unit
  • APV Approach with Vertical Guidance
  • APV Approve, Approved, Approval
  • AQZ Area QNH Zone
  • ARC Area Chart
  • ARFFS Aerodrome Rescue and Fire Fighting Service (sometimes referred to as RFFS)
  • ARFL Aeroplane Reference Field Length
  • ARFO Area Forecast
  • ARH Aircraft Registration Holder
  • ARM Airspace Risk Model
  • ARM Aircraft Recovery Manual
  • ARN Aviation Reference Number
  • ARNG Arrange
  • ARO Air traffic services reporting office
  • AROC Aircraft radio operator certificate
  • ARP Aerodrome reference point
  • ARP Air-Report (message type designator)
  • ARQ Automatic error correction
  • ARR Arrive, Arrival
  • ARS Special Air-Report (message type designator)
  • ARST Arresting (specify (part of) aircraft arresting equipment)
  • AS Altostratus (meteorological)
  • AS Australian Standard
  • ASA Australian Skydiving Association
  • ASAC Australian Sports Aviation Confederation
  • ASAP As Soon as Possible
  • ASC Ascend to or ascending
  • ASDA Accelerate-stop distance available
  • ASE Airborne Support Equipment
  • ASE Altimetry System Error
  • ASEPTA Approved Single-engine Turbine Aeroplane
  • ASF Aviation Safety Forum
  • ASH Aviation Services Handbook
  • ASI Air Speed Indicator
  • ASI Aviation Safety Index
  • ASIR Aviation Safety Incident Report
  • ASPH Asphalt
  • ASR Area Surveillance Radar
  • ASRA Australian Sport Rotorcraft Association
  • ASSI Air Safety Support International- a wholly-owned subsidiary of the UK Civil Aviation Authority
  • 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’)
  • AT… At (followed by time at which weather change is forecast to occur)
  • ATA Actual Time of Arrival
  • ATA Air Transport Association
  • ATC Air Traffic Control (in general)
  • ATD Actual Time of Departure
  • ATE Automatic Test Equipment
  • ATEL/ANAV Aeronautical Telecommunication and Radio Navigation Services
  • ATFM Air Traffic Flow Management
  • ATIS Automatic terminal information service
  • ATM Air traffic management
  • ATN Aeronautical telecommunications network
  • ATO Aviation Testing Officer
  • ATP At.. (time or place)
  • ATPL Airline Transport Pilot Licence
  • ATS Air Traffic Service(s)
  • ATSB Australian Transport Safety Bureau
  • ATSO Australian Technical Standard Order
  • ATSOA Australian Technical Standard Order Authorisation
  • ATTN Attention
  • ATZ Aerodrome traffic zone
  • AUF Australian Ultralight Federation (now Recreational Aviation Australia)
  • AUTH Authorised, Authorisation
  • AUW All Up Weight
  • AUX Auxiliary
  • AVBL Available
  • AVG Average
  • AVGAS Aviation Gasoline
  • AVM Abrupt Vertical Manoeuvres (by the MIL)
  • AWB Airworthiness Bulletin
  • AWIB Aerodrome Weather Information Broadcast
  • AWK Aerial Work (Air work – general aviation)
  • AWO Aerial work operation
  • AWS Automatic Weather Station
  • AWTA Advise as to wh

B

  • B Blue
  • BA Braking action
  • BAK Basic aeronautical knowledge
  • BASA Bilateral Aviation Safety Agreement
  • BASE Cloud Base (met)
  • BCFG Fog Patches (met)
  • BCN Beacon (aeronautical ground light)
  • BCST Broadcast
  • BDRY Boundary
  • BECMG Becoming
  • BETA Manually controlled mode for constant speed propellers or turbo prop aircraft
  • BFR Before
  • BIP-M Basic Instruction Package for Meteorologists
  • BIPMT Basic Instruction Package for Meteorological Technicians
  • BITE Built In Test Equipment
  • BKN Broken (cloud descriptor) (met)
  • BL… Blowing (followed by DU=dust, SA=sand or SN=snow)
  • BLDG Building
  • BLO Below Clouds
  • BLW Below
  • BOM Bureau of Meteorology
  • BOMB Bombing
  • BR Mist
  • BRF Short (used to indicate type of approach)
  • BRG Bearing
  • BRKG Braking
  • BRW Brakes release weight
  • BS Broadcasting Station (Commercial)
  • BTL Between Layers
  • BTN Between
  • BVLOS Beyond visual line of sight

C

  • C Degrees Celsius (Centigrade)
  • C Centre (Runway)
  • CA Course Acquisition
  • CA/GRO Certified Air/Ground Radio Operator
  • CA/GRS Certified Air/Ground Radio Service
  • CAA NZ Civil Aviation Authority New Zealand
  • CAAP Civil Aviation Advisory Publication
  • CAGRO Certified Air Ground Radio Operation
  • CAMO Continuing Airworthiness Management Organisation
  • CAMP Continuous Airworthiness Maintenance Program
  • CAO Civil Aviation Order
  • CAR Civil Aviation Regulations 1988
  • CAS Calibrated air speed
  • CASA Civil Aviation Safety Authority
  • CASR Civil Aviation Safety Regulations 1998
  • CASR Civil Aviation Safety Regulation
  • CAT Category
  • CAT Clear Air Turbulence
  • CAVOK Visibility, cloud and present weather better than prescribed values or conditions
  • CB Cumulonimbus (met)
  • CBT Competency-based Training
  • CC Cirrocumulus (met)
  • CCA Corrected meteorological message (for CCB, CCC..etc., in sequence) (message type designator)
  • CCF Capability Check Flight
  • CCTS Circuits
  • CD Candela
  • CDCCL Critical Design Configuration Control Limit
  • CDI Course Direction Indicator
  • CDL Configuration Deviation List
  • CDN Coordination (message type designator)
  • CEN En Route and Area ATC unit
  • CEO Chief Executive Officer
  • CET Clearance Expiry Time
  • CF Change Frequency to
  • CFI Chief Flying Instructor
  • CFIT Controlled Flight into Terrain
  • CFL Cleared Flight Level
  • CFM Confirm, I confirm
  • CG Centre of gravity
  • CGL Circling guidance light(s)
  • 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)
  • CHG Modification (message type designator)
  • CHTR Charter
  • CI Cirrus (met)
  • CIDIN Common ICAO data interchange network
  • CIR Command Instrument Rating
  • CIT Near, Over Large Town(s)
  • CIV Civil
  • CK Check
  • CL Centre Line
  • CLA Clear type of ice formation
  • CLBR Calibration
  • CLD Cloud (met)
  • CLG Calling
  • CLIAS Climbing Indicated Airspeed
  • CLMAX Maximum Co-efficient of Lift
  • CLR Clear, Cleared to… Clearance
  • CLSD Closed, Close, Closing
  • CM (cm) Centimetre
  • CMB Climb to or Climbing to
  • CMM Component Maintenance Manual
  • CMPL Configuration, Maintenance and Procedures
  • CMPL Completion, Completed, or Complete
  • CMR Certification Maintenance Requirements
  • CMSD Commissioned
  • CNL Cancel
  • CNL Flight plan cancellation message
  • CNS Communications, Navigation and Surveillance
  • COA Certificates of Approval (issued to maintenance organisations)
  • CofA Certificate of Airworthiness
  • COM Communications
  • CONC Concrete
  • COND Condition
  • CONS Continuous
  • CONST Construction, Constructed
  • CONT Continue(s), Continued
  • COOR Coordinate, Coordinated
  • COORD Coordinates
  • COP Change over point
  • CoR Certificate of Registration
  • COR Correct, Corrected, Correction
  • COS Conical Surface
  • COT At the Coast, Coastal
  • COV Cover, Covered, Covering
  • CP Chief Pilot
  • CPDLC Controller-Pilot Data Link Communication
  • CPL Commercial Pilot Licence
  • CPL Current flight plan
  • CRC Cyclic redundancy check
  • CRIS Cost Recovery Impact Statement
  • CRM Crew Resource Management
  • CRZ Cruise
  • CS Cirrostratus (met)
  • CS Call sign
  • 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
  • CTAF Common Traffic Advisory Frequency
  • CTAF(R) Common Traffic Advisory Frequency – (Radio)
  • CTAM Climb to and maintain
  • CTC Category Technical Competency
  • CTC Contact
  • CTL Control
  • CTN Caution
  • CTR Control Zone
  • CU Cumulus (met)
  • CUF Cumuliform (met)
  • CUST Customs
  • CVR Cockpit voice recorder
  • CW Carrier Wave
  • CWY Clearway

D

  • D Deleted
  • D Downward (tendency in RVR (Runway visual range) during previous 10 minutes)
  • D-ATIS Data Link Automatic Terminal Information Service (pronounced’DEE-ATIS’)
  • D-VOLMET Data Link VOLMET
  • D… Danger Area (followed by identification)
  • DA Decision Altitude
  • DA/H Decision Altitude/Height
  • DALR Dry Adiabatic Lapse Rate
  • DAME Designated Aviation Medical Examiner
  • DAO Designated Aviation Ophthamologist
  • DAP Departure and Approach Procedures
  • DCD Double channel duplex
  • DCKG Docking
  • DCMSD Decommissioned
  • DCPC Direct Controller-Pilot Communications
  • DCS Double channel simplex
  • DCT Direct (in relation to flight plan clearances and type of approach)
  • DE Form (used to preceed the call sign of the calling station) (to be used in AFS as a procedure signal)
  • DEC December
  • DEG Degrees
  • DEP Depart, Departure, Departed, Departing, Departure Message
  • DER Departure End of Runway
  • DER Designated Engineering Representative
  • DES Descend to, Descending to
  • DEST Destination
  • DETRESFA Distress Phase
  • DEV Deviation, Deviating
  • DF Direction Finder/ Finding
  • DFDR Digital Flight Data Recorder
  • DFTI Distance from touchdown indicator
  • DGA Distance Measuring Equipment or Global Positioning Satellite System Arrival
  • DH Decision Height
  • DIF Diffuse
  • DISP Displaced
  • DIST Distance
  • DIV Diversion, Divert, Diverting
  • DLA Delay (message type designator)
  • DLIC Data Link Initiation Capability
  • DLY Daily
  • DMC Direct Maintenance Cost
  • DME Distance Measuring Equipment
  • DMEN DME (International)
  • DMEP DME (International Precision used in conjunction with Microwave Landing System)
  • DNG Danger, Dangerous
  • DOC Direct Operating Cost
  • DOC Documents
  • DoD Department of Defence
  • DOM Domestic
  • DP Dew Point Temperature
  • DP Discussion Paper
  • DPT Depth
  • DR Dead Reckoning (navigation)
  • DR… Low drifting (followed by DU=dust, SA=sand or SN=snow)
  • DRG During
  • DS Dust storm
  • DSB Double sideband
  • DTAM Descend to And Maintain
  • DTG Date-Time Group
  • DTHR Displaced Runway Threshold
  • DTRT Deteriorate, Deteriorating
  • DTW Dual tandem wheels
  • DU Dust
  • DUC Dense Upper Cloud (met)
  • DUPE This is a duplicate message (to be used in Aeronautical Fixed Service as a procedure signal)
  • DUR Duration
  • DVOR Doppler VOR
  • DW Dual wheels
  • DZ Drizzle

E

  • E East, East Longitude
  • E E E Error (to be used in AFS as a procedure signal)
  • EASA European Aviation Safety Agency
  • EAT Expected Approach Time
  • EB Eastbound
  • ECAR European Civil Aviation Requirement (formerly JAR)
  • EDTO Extended Diversion Time Operations
  • EET Estimated Elapsed Time
  • EFB Electronic Flight Bag
  • EFC Expect further clearance
  • EGNOS European Geostationary Navigation Overlay System
  • EGPWS Enhanced Ground Proximity Warning System
  • EHF Extremely high frequency (30,000 to 300,000 MHz)
  • EHR Encumbrance Holder Register
  • ELBA Emergency locator beacon-aircraft
  • ELEV Elevation
  • ELR Extra Long Range
  • ELT(S) Emergency Locator Transmitter (Survival)
  • EM Engine Manual
  • EM Explanatory Memorandum (submitted to EXCO with regulation amendment)
  • EM Emission
  • EMBD Embedded in a Layer (to indicate cumulonimbus embedded in layers of other clouds)
  • EMERG Emergency
  • EMS Emergency Medical Service
  • EMS Environment Management System
  • END Stop-end (related to RVR)
  • ENDCE Endurance
  • ENE East North-East
  • ENG Engine
  • ENR En Route
  • ENRC En Route Chart (followed by name/title)
  • EOBT Estimated off Blocks Time
  • EPA Environment Protection Agency
  • EPIRB Electronic Position Indicating Radio Beacon (marine term.)
  • EQPT Equipment
  • ER Here..or herewith
  • ERC En-route Chart
  • ERP Emergency Response Plan
  • ERSA En-route Supplement Australia
  • ES Explanatory Statement (tabled with regulations in Parliament)
  • ESD Electrostatic sensitive discharge
  • ESDE ESD equipment
  • ESE East Southeast
  • ESIR Electronic safety incident report
  • EST Estimate or estimated or estimate (message type designator)
  • ETA Estimated Time of Arrival, Estimating Arrival
  • ETCM Engine trend and condition monitoring
  • ETD Estimated Time of Departure, Estimating Departure
  • ETO Estimated Time Over significant point
  • ETOPS Extended range operations by turbine-engined aeroplanes
  • ETP Equi Time Interval
  • ETT Estimated Time Interval
  • EV Every
  • EVLOS Extended visual line of sight
  • EVU Enforceable Voluntary Undertaking
  • EXC Except
  • EXCO Executive Council
  • EXER Exercises, Exercising, to exercise
  • EXP Expect, Expected, Expecting
  • EXTD Extend, Extending, Extended

F

  • F Fixed (chart symbol)
  • FAA Federal Aviation Administration of the USA
  • FAAOC Foreign Aircraft Air Operator’s Certificate
  • FAC Facility, Facilities
  • FADEC Full Authority Digital Engine Control
  • FAF Final Approach Fix
  • FAL Facilitation of International Air
  • FAP Final Approach Point
  • FARs Federal Aviation Regulations (Federal Aviation Administration of the USA)
  • FATO Final approach and take-off area
  • FAWP Final Approach Waypoint
  • FAX Facsimile Transmission
  • FBL Light (used to indicate the intensity of WX phenomena, interference or static reports, eg BL RA = light rain)
  • FC Funnel Cloud (tornado or water spout)
  • FCST Forecast
  • FCT Friction coefficient
  • FD Fault Detection
  • FDE Fault detection and exclusion (in relation to GPS equipment)
  • FDL Fixed Distance Lighting
  • FDPS Flight Data Processing system
  • FDS Flight Director System
  • FEW Few (cloud descriptor)
  • FFR Flood, Fire Relief
  • FG Fog
  • FIA Flight Information Area
  • FIC Flight Information Centre
  • FIO Flight Information Office
  • FIR Flight Information Region
  • FISA Flight information service (automated)
  • FISS Flight Information Service Station
  • FIX Fault Isolation Manual
  • FL Flight Level
  • FLD Field
  • FLG Flashing
  • FLIR Forward Looking Infra Red
  • FLR Flares
  • FLT Flight
  • FLTCK Flight check
  • FLUC Fluctuating, Fluctuation, Fluctuated
  • FLW Follow(s), Following
  • FLY Fly, Flying
  • FM From
  • FM… From (followed by time weather change is forecast to begin)
  • FMS Flight Management System
  • FMU Flow Management Unit
  • FNA Final Approach
  • FNPT Flight and Navigation Procedures Trainer
  • FOD Foreign Object Damage
  • FOI Flying Operations Inspector
  • FPD Flight Plan Designator
  • FPL Filed Flight Plan Message
  • FPM Feet per Minute
  • FPR Flight Plan Route
  • FPV First person view
  • FR Fuel Remaining
  • FREQ Frequency
  • FRM Fault Reporting Manual
  • FRMS Fatigue Risk Management System
  • FRNG Firing
  • FRONT Front (relating to weather)
  • FRQ Frequent
  • FS Flight Service (in general)
  • FSA Flight Safety Australia
  • FSL Full Stop Landing
  • FSP Fish Spotting
  • FSS Flight service station
  • FST First
  • FT Feet
  • FTD Flight training device
  • FTE Full time equivalent
  • FTO Flight Training Organisation
  • FU Smoke
  • FXD Fixed
  • FZ Freezing
  • FZDZ Freezing Drizzle
  • FZFG Freezing Fog
  • FZL Freezing Level
  • FZRA Freezing Rain

G

  • G Gravity
  • G Green
  • G/A Ground-to-air
  • G/A/G Ground-to-air and air-to-ground
  • GA Go ahead, resume sending (to be used in AFS as a procedure signal)
  • GA General Aviation
  • GAAP General Aviation Aerodrome Procedures
  • GAMET Area forecast for low-level flights
  • GAPAN Honourable Company of Air Pilots, Australia, Inc.
  • GBAS Ground Based Augmentation System
  • GCA Ground Controlled Approach
  • GCN General Computing Network (operated by Airservices Australia)
  • GDOP Geometric Dilution of Precision
  • GEN General
  • GEO Geographic, true
  • GES Ground Earth Station
  • GFA The Gliding Federation of Australia
  • GFY Glider Flying
  • GHA Ground handling agents
  • GIVD Gravity Induced Vestibular Dysfunction
  • GLD Glider
  • GLOC Gravity Induced Loss of Consciousness
  • GLONASS Global Orbiting Navigation Satellite System (pronounced ‘GLO-NAS’)
  • GM Guidance Material
  • GMC Ground Movement Chart (followed by name/title)
  • GND Ground
  • GNDCK Ground Check
  • GNS Global Navigation System
  • GNSS Global navigation satellite system
  • GP Guiding principles
  • GP Glide Path
  • GP FLG Group Flashing (number) (used in conjunction with aerodrome lighting)
  • GPI Glide Path Intercept
  • GPS Global positioning system (see GNSS)
  • GPWS Ground proximity warning system
  • GR Hail
  • GRAD Minimum Required Climb Gradient
  • GRAS Ground Based Regional Augmentation System
  • GRASS Grass Landing Area
  • GRIB Processed meteoroglogical data in the form of grid point values expressed in binary form (aeronautical meterological code)
  • GRVL Gravel
  • GS Groundspeed
  • GS Small Hail and/or Snow Pellets
  • GSE Ground Support Equipment
  • GUND Geoid Undulation

H

  • H24 Continuous day and night service
  • HAA Height Above Aerodrome
  • HAA Helicopter Association of Australia
  • HAAMC Head of Aircraft Airworthiness and Maintenance Control
  • HAM Head of Aircraft Maintenance
  • HAMC Head of Aircraft Maintenance Control
  • HAPI Helicopter approach path indicator
  • HAT Height Above Threshold
  • HBN Hazard Beacon
  • HDF High frequency direction-finding station
  • HDG Heading
  • HDS Hours of Daylight Saving
  • HEL Helicopter
  • HF Human Factors
  • HF High Frequency (3000 to 30,000 KHZ)
  • HFEM Human Factor and Error Management System
  • HGFA Hang Gliding Federation of Australia Inc
  • HGS Heads-up Guidance System
  • HGT Height, Height Above
  • HIAL High Intensity Approach Lighting
  • HIOL High Intensity Obstacle Lights
  • HIRL High Intensity Runway Lighting
  • HJ Sunrise to Sunset
  • HLDG Holding
  • HLS Helicopter Landing Site
  • HMI Human-machine Interface
  • HN Sunset to Sunrise
  • HO Service available to meet operational requirements
  • HOFO Head of Flying Operations
  • HOO Head of Operations
  • HOSP Hospital Aircraft
  • HOTAS Head of Training and Standards
  • HOTC Head of Training and Checking
  • HP Horse Power
  • HPA HectoPascal
  • HR Hours
  • HS Homestead
  • HS Service available during hours of scheduled operations
  • HSL Hold Short Lights
  • HUD Head Up Display
  • HURCN Hurricane
  • HVDF High and very high frequency direction finding stations (at the same location)
  • HVY Heavy
  • HVY Heavy (used to indicate the intensity of WX phenomena, eg HVY RA = heavy rain)
  • HX No specific working hours
  • HYR Higher
  • HZ Haze
  • HZ (hz) Hertz
  • HZS Horizontal Surface

I

  • IA Inspection authorisation
  • IAC Instrument approach chart (followed by name/title)
  • IAF Initial Approach Fix
  • IAL Instrument Approach and Landing Chart
  • IAO In and out of clouds
  • IAP Instrument Approach Plate
  • IAR Intersection of air routes
  • IAS Indicated air speed
  • IATA International Air Transport Association
  • IAW In Accordance With
  • IAWP Initial Approach Way-point
  • IBN Identification Beacon
  • IC Ice Crystals (MET code)
  • ICA Instructions for continuing airworthiness (issued by manufacturer or designer)
  • ICAO International Civil Aviation Organization
  • ICE Icing, Ice
  • ICUS In-command Under Supervision
  • ID Identifier, identify
  • IDENT Identification
  • IF Instrument Flight
  • IF Intermediate Approach Fix
  • IFF Identification Friend/Foe
  • IFR Instrument flight rules
  • IFSD In-flight Shutdown
  • IG Implementation Group
  • IGA International general aviation
  • ILS Instrument Landing System
  • IM Inner Marker
  • IMC Instrument meteorological conditions (other than VMC)
  • IMC Indirect Maintenance Cost
  • IMG Immigration
  • IMI Interrogation sign
  • IMPR Improve, Improving, Improvement
  • IMT Immediate, Immediately
  • INA Initial approach
  • INBD Inbound
  • INC In Cloud
  • INCERFA Uncertainty Phase
  • INFO Information
  • INOP Inoperative
  • INP If not possible
  • INPR In progress
  • INS Inertial Navigation System
  • INSTL Install, Installed, Installation
  • INSTR Instrument
  • INT Intersection
  • INTER Intermittent, Intermittently (meteorological)
  • INTL International
  • INTRG Interrogator
  • INTRP Interrupt, Interruption, Interrupted
  • INTSF Intensify, Intensifying
  • INTST Intensity
  • IoA Instrument of appointment
  • IOC Indirect Operating Cost
  • IOE Initial Operational Experience
  • IPC Illustrated Parts Catalogue
  • IR Ice on runway
  • IREX Instrument Training Examination
  • IRM Immediately Reportable Matters
  • IRS Internal Reporting System
  • ISA International Standard Atmosphere
  • ISB Independent Sideband
  • ISIM Integrated Safety Investigation Methodology
  • ISO9000 International Organization for Standardization
  • ISOL Isolated
  • ITT Interstage Turbine Temperature
  • IWI Illuminated Wind Indicator
  • IWP Intermediate Way-point

J

  • J-BAR Jet Barrier
  • JAA Joint Aviation Authorities (of Europe)
  • JAR Joint Aviation Requirements (of the European JAA)
  • JAR-OPS JAR Operations
  • JTSO Joint Technical Standard Order
  • JTST Jet Stream

K

  • KDR Knowledge Deficiency Report
  • KG (kg) Kilograms
  • KHZ (kHz) Kilohertz
  • KM (km) Kilometers
  • KMH (km/h) Kilometers per hour
  • KPA (kPa) Kilopascals
  • KT (kt) Knots
  • KW (kw) Kilowatts

L

  • L Left (runway identification)
  • L Locator (see LM, LO)
  • LAAS Local Area Augmentation System
  • LAHSO Land and Hold Short Operations
  • LAME Licensed Aircraft Maintenance Engineer
  • LAN Inland
  • LAT Latitude
  • LDA Landing distance available
  • LDG Landing
  • LDI Landing Direction Indicator
  • LDP Landing decision point
  • LEN Length
  • LF Low Frequency (30 to 300 KHZ)
  • LGT Light, Lighting
  • LGTD Lighted
  • LIH Light Intensity High
  • LIL Light Intensity Low
  • LIM Light Intensity Medium
  • LIOL Low Intensity Obstacle Lights
  • LIRL Low Intensity Runway Lights
  • LJR Low Jet Route
  • LL Lower Limit
  • LLN Low-level Navigation (by the MIL)
  • LLO Low Level Operations (by the MIL)
  • LLZ Localizer
  • LM Locator (middle)
  • LMT Local mean time
  • LO Locator (outer)
  • LOC Locally, Location, Located, Local
  • LOE Lane of Entry
  • LONG Longitude
  • LOSA Line Operations Safety Audit
  • LPT Liquid Penetrant Test
  • LRCS Long-range communication system
  • LRG Long Range
  • LRI Line Replaceable Item
  • LRNS Long-range navigation system
  • LRU Line Replaceable Unit
  • LSA Light Sport Aircraft
  • LSALT Lowest safe altitude
  • LSd CASA’s Legal Services Division
  • LTD Limited
  • LUL Lowest Usable Level
  • LV Light and Variable (relating to wind)
  • LVE Leave, Leaving
  • LVL Level
  • LYR Layer, Layered

M

  • M Mach number (followed by figures ie .02 = Mach .02)
  • M (m) Metres (preceded by figures)
  • M/E Multi-engine
  • MAAT Manual Authoring and Assessment Tool
  • MAE Men and Equipment
  • MAG Magnetic
  • MAHWP Missed Approach Holding Way-point
  • MAINT Maintenance
  • MAN Manual
  • MAP Aeronautical Maps and Charts
  • MAP Manifold Air Pressure
  • MAPT Missed Approach Point
  • MAR At Sea
  • MAUW Maximum All Up Weight
  • MAWP Missed Approach Waypoint
  • MAX Maximum
  • MBST Microburst
  • MBZ Mandatory Broadcast Zone
  • MCC Multi-crew Co-ordination
  • MCM Maintenance control manual
  • MCQFS Manual of criteria for the qualification of flight simulators ICAO Doc 9625-AN/938
  • MCUR Mean Cycles Between Unscheduled Removals
  • MCW Modulated Continuous Wave
  • MDA Minimum Descent Altitude
  • MDF Medium Frequency Direction Finding Station
  • MDR Major Defect Report
  • MEA Minimum En-route Altitude
  • MED Medical
  • MEL Minimum equipment list
  • MERSITAB Manufacturing, Engineering and Related Services Industry Training Advisory Body
  • MET Meteorological, Meteorology
  • MET REPORT Aviation routine weather report
  • METAR Aviation routine weather report (in aeronautical meteorological code)
  • METRAD MET Radar
  • MF Medium Frequency (300 to 3000 KHZ)
  • MHZ (mhz) Megahertz
  • MIFG Shallow Fog
  • MIL Military
  • MIL-STD Military Standard
  • MIN Minutes
  • MIOL Medium Intensity Obstacle Lights
  • MIRL Medium Intensity Runway Lights
  • MISC Miscellaneous
  • MKR Marker Radio Beacon
  • MLJ Military Low Jet
  • MLJR Military Low Jet Route
  • MLS Microwave Landing System
  • MLW Maximum Landing Weight
  • MM Middle Marker
  • MMEL Master minimum equipment list
  • MNM Minimum
  • MNT Monitor, Monitoring,
  • MNTN Maintain, Maintained, Maintaining
  • MOA Military Operating Area
  • MOC Minimum obstacle clearance (required)
  • MOD Moderate, Moderately
  • MOD Moderate (used to indicate the intensity of WX phenomena, interference or static reports, eg MOD RA = moderate rain).
  • MON Above Mountains
  • MOPS Minimum Operational Performance Standards
  • MOS Manual of Standards
  • MOU Memorandum of understanding
  • MOV Move, Moved, Moving, Movement
  • MOWP Method of Working Plan
  • MPD Maintenance Planning Data
  • MPI Magnetic Particle Inspection
  • MPL Multi-crew Pilot Licence
  • MPS Metres per Second
  • MPT Magnetic Particle Inspection Technician
  • MRB Maintenance Review Board
  • MRBR Maintenance Review Board Report
  • MRG Medium Range
  • MRO Maintenance, repair and overhaul
  • MRP ATS/MET Reporting Point
  • MS Minus
  • MSA Minimum sector altitude
  • MSAS Multi-function Transport Satellite (MTSAT) Satellite-based Augmentation System
  • MSDS Material Safety Data Sheets
  • MSG Message
  • MSG Maintenance Steering Group
  • MSG-3 Maintenance Steering Group Logic Process
  • MSI Maintenance Significant Item
  • MSL Mean Sea Level
  • MSOS Maintenance specific operation specification
  • MSSR Monopulse Secondary Surveillance Radar
  • MT Mountain
  • MTBF Mean Time Between Failure
  • MTBR Mean Time Between Removals
  • MTBUR Mean Time Between Unscheduled Removals
  • MTO Maintenance training organisation
  • MTOW Maximum take-off weight
  • MTP Maximum Tyre Pressure
  • MTSAT Multi-function Transport Satellite
  • MTTF Mean Time To Failure
  • MTTR Mean Time To Repair
  • MTTUR Mean Time To Unscheduled Removal
  • MTUR Special Term For Data Transmittal
  • MTW Mountain waves
  • MVA Minimum Vector Altitude
  • MWO Meteorological Watch Office
  • MX Mixed type of ice formation (white and clear)

N

  • N North, North Latitude
  • N1 Gas Generator Speed
  • N2 Second Stage Turbine Speed
  • NAA National Airworthiness Authority (for a country other than Australia)
  • NAD Non-acqueous Developer
  • NAIPS National aeronautical information processing system
  • NANDTB National Aerospace Non-destructive Testing Board
  • NANU Notice Advisory to NavStar Users
  • NAP Noise Abatement Procedures
  • NAS National Airspace System
  • NASC National AIS System Centre
  • NAT NAVAID Training
  • NAV Navigation
  • NAVAID Navigation Aid
  • NAWD Non-acqueous Wet Developer
  • NB Northbound
  • NBFR Not Before
  • NC No Change
  • NDB Non-directional Radio Beacon
  • NDI Non-destructive inspection
  • NDT Non-destructive testing
  • NE Northeast
  • NEG Negative, No. Permission not granted or, That is not correct
  • NFRM Notice of Final Rule Making
  • NG Gas Generator Speed
  • NGT Night
  • NIL None
  • NM Nautical Miles
  • NML Normal
  • NNE North North-East
  • NNW North North-West
  • NOF International NOTAM Office
  • NOSIG No Significant Change
  • NOTAM Notice To Airmen
  • NOZ Normal Operating Zone
  • NP Propeller Speed
  • NPA Non-precision approach (procedures at aerodromes)
  • NPC Notice of proposed change (consultation for amendment to a MOS)
  • NPRM Notice of proposed rule making
  • NSC Nil Significant Cloud
  • NTA No TAF Amendment
  • NTL National
  • NTS Negative Torque Sensing System
  • NTSB National Transportation Safety Board (of the USA)
  • NTZ No-transgression zone
  • NVD Night Vision Device
  • NVED Night Vision Enhancement Devices
  • NVET National vocational education and training
  • NVFR Night Visual Flight Rules
  • NVG Night Vision Goggles (by the MIL)
  • NVIS Night Vision Imaging Systems
  • NW North-West
  • NXT Next
  • NZ New Zealand
  • NZ CAA New Zealand Civil Aviation Authority
  • NZS New Zealand Standard

O

  • O/R On Request
  • OAR Office of Airspace Regulation
  • OAT Outside Air Transport
  • OAT Outside Air Temperature
  • OBPR Office of Best Practice Regulation
  • OBPR Office of Best Practice Regulation
  • OBS Observe, Observed, Observation
  • OBS Omni Bearing Selector
  • 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
  • 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
  • OTAC Overseas Territories Aviation Circulars
  • OTAR Overseas Territories Aviation Requirements
  • OTLK Outlook (used in Sigmet messages for volcanic ash and tropical cyclones)
  • OTP On Top
  • OUBD Outboard
  • OVC Overcast
  • OW Over Water

P

  • P.. Prohibited Area (followed by identification)
  • PA Precision Approach
  • PAL Pilot Activated Lighting
  • PANS Procedures for Air Navigation Services
  • PANS-OPS Procedures for Air Navigation Services – Aircraft Operations ICAO Doc 8168 Vol I and II
  • PAPI Precision Approach Path Indicator
  • PAR Precision Approach Radar
  • PARL Parallel
  • PATC Precision Approach Terrain Chart (followed by name/title)
  • PAX Passengers
  • PBM Power Plant Build-Up Manual
  • PC Personal Computer
  • PCATD Personal Computer-based Aviation Training Device
  • PCD Proceed, Proceeding
  • PCL Pilot Controlled Lighting
  • PCN Pavement classification number
  • PCT Practical consolidation training
  • PDC Pre-Departure Clearance
  • PDO Product distribution organisation
  • PDOP Positional Dilution of Precision
  • PDSE Pre-departure Service Check
  • PEC Pressure Error Correction
  • PERM Permanent
  • PFC Porous Friction Course
  • PFR Preferred Route
  • PH Public Holiday
  • PIB Pre-flight information bulletin
  • PIC Pilot-in-command
  • PICUS Pilot-in-Command Under Supervision
  • PIFR Private IFR rating
  • PILS Practice ILS
  • PIREP Pilot Reports
  • PJE Parachute Jumping Exercise
  • PL Ice Pellets
  • PLN Flight Plan
  • PLVL Present Level
  • PMP Primary Maintenance Process
  • PN Prior Notice Required
  • PNR Point of No Return
  • PO Dust Devils
  • POB Persons on Board
  • POH Pilot Operating Handbook
  • POSS Possible
  • PPI Plan Position Indicator
  • PPL Private Pilot Licence
  • PPR Prior Permission Required
  • PPS Precise Positioning Service
  • PPSN Present Position
  • PRD Prohibited, Restricted and Danger Areas
  • PRFG Aerodrome Partially Covered by Fog (MET code)
  • PRI Primary
  • PRKG Parking
  • PRM Precision Runway Monitoring
  • PRM Precision runway monitoring
  • PROB Probable, Probability
  • PROC Procedure
  • PROV Provisional
  • PS Plus
  • PSG Passing
  • PSN Position
  • PSP Pierced Steel Plank
  • PSR Primary Surveillance Radar
  • PSYS Pressure System(s)
  • PTBL Portable
  • PTN Procedure Turn
  • PTT Push To Talk
  • PVT Private
  • PWR Power

Q

  • QDM Magnetic Heading (zero wind)
  • QDR Magnetic Bearing
  • QEC Quick Engine Change Unit
  • QFE An altimeter set to QFE will read zero when the aircraft is on the runway
  • QMS Quality Management System
  • QNH Altimeter subscale setting to obtain elevation or altitude
  • QTE True Bearing
  • QTG Qualification test guide
  • QUAD Quadrant

R

  • R Red
  • R Right (runway system identification)
  • R…. Restricted Area (followed by number)
  • R/T Radio Telephone
  • RA Rain
  • RA-Aus Recreational Aviation Australia
  • RAAA Recreational Aviation Association of Australia
  • RAAO Recreational Aviation Administrative Organisation
  • RAC Rules of the Air and Air Traffic Services
  • RAD Radius
  • RAeS Royal Aeronautical Society
  • RAFC Regional Area Forecast Centre
  • RAG Ragged
  • RAG Runway Arresting Gear
  • RAI Runway Alignment Indicator
  • RAIM Receiver Autonomous Integrity Monitoring
  • RAM Repair and Maintenance
  • RAPAC Regional Airspace Users Advisory Committee
  • RAPIC Radar Picture (MET)
  • RAS Radar Advisory Service
  • RASF Regional Aviation Safety Forum
  • RAT RAM Air Turbine
  • RCA Reach Cruising Altitude,
  • RCA Request For Corrective Action
  • RCC Rescue Coordination Centre
  • RCH Reach, Reaching
  • RCL Runway Centre Line
  • RCLL Runway Centre Line Lights
  • RCLM Runway Centre Line Marking
  • RDL Radial
  • RDO Radio
  • RDS Runway Distance Supplement
  • RE… Recent (used to qualify weather phenomena, eg RERA = recent rain)
  • REC Receive, Receiver, Received
  • REDL Runway Edge Lights
  • REF Reference to… Refer to…
  • REG Registration
  • RENL Runway End Lights
  • ReOC PRPA operator’s certificate
  • REP Report, Reported, Reporting, Reporting Point
  • RePL Remote pilot licence
  • REQ Request, Requested
  • RERTE Re-route
  • RES Reserve Fuel
  • RESA Runway end safety area
  • RESTR Restrictions
  • REV Review
  • RFACA Royal Federation of Aero Clubs of Australia
  • RFC Request for change
  • RFC Regional Forecasting Centre (Met)
  • RFFS Rescue and Fire Fighting Services
  • RH Radio Height
  • RHC Right-hand Circuit
  • RIF Reclearance in Flight
  • RIFTO Restricted Instrument Flight Take-off
  • RIS Regulation Impact Statement
  • RIS Radar information service
  • RL Report Leaving
  • RLA Relay to
  • RLLS Runway Lead-in Lighting
  • RMIT Royal Melbourne Institute of Technology
  • RMK Remark(s)
  • RMS Root Mean Square
  • RNAV Area navigation
  • RNP Required navigation performance
  • RO Registered operator
  • ROBEX Regional OPMET Bulletin Exchanges
  • ROC Rate of Climb
  • ROD Rate of Descent
  • ROFOR Route Forecast (in aeronautical meteorological code)
  • RPA Remotely piloted aircraft
  • RPA Rules and practices for aerodromes
  • RPAS Remotely piloted aircraft system
  • RPI Radar Position Indicator
  • RPI Regulatory Performance Indicator
  • RPI Runway Point of Intercept
  • RPL Recognition of prior learning
  • RPM Revolutions Per Minute
  • RPS Remote pilot station
  • RPT Regular public transport
  • RQ Require(d)
  • RQMNTS Requirements
  • RR Report Reaching
  • RRM Routine Reportable Matters
  • RSC Rescue Sub-Centre
  • RSCD Runway Surface Condition
  • RSP Responder Beacon
  • RSR En route Surveillance Radar
  • RTB Return to Base
  • RTCA Radio Technical Commission for Aeronautics
  • RTE Route
  • RTF Radio Telephone
  • RTHL Runway Threshold Light(s)
  • RTIL Runway Threshold Identification Lights
  • RTN Return, Returned, Returning
  • RTO Rejected take-off
  • RTO Registered training organisation
  • RTS Return to Service
  • RTZL Runway Touchdown Zone Light(s)
  • RVR Runway visual range
  • RVSM Reduced Vertical Separation Minimum
  • RWS Runway Strip
  • RWY Runway

S

  • S South, South Latitude
  • S-I Straight-In
  • S/E Single-engine
  • SA Sand
  • SA Selective Availability
  • SA Situation Awareness
  • SAAA Sport Aircraft Association of Australia
  • SAL Supplementary Airline Licence
  • SALR Saturated Adiabatic Lapse Rate
  • SALS Simple Approach Lighting System
  • SAR Search and Rescue
  • SARPs Standards and Recommended Practices
  • SARTIME Time search action required
  • SARWATCH Search and Rescue Watch
  • SATCOM Satellite Communication
  • SB Service Bulletin
  • SB Southbound
  • SBAS Satellite Based Augmentation System
  • SC Stratocumulus
  • SCC Standards Consultative Committee
  • SCP Safety Critical Personnel
  • SCT Scattered (meteorological)
  • SDBY Standby
  • SDC Standard Departure Clearance
  • SDR Service difficulty report
  • SE South East
  • SEA Sea (used in connection with sea-surface temperature and state of the sea)
  • SEACO Single engine aircraft only
  • SEC Seconds
  • SECN Section
  • SECT Sector
  • SELCAL Selective Calling System
  • SER Service, Servicing, Served
  • SEV Severe (used eg to qualify icing and turbulence report)
  • SFC Surface
  • SFL Sequenced Flashing Lights
  • SG Snow Grains
  • 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)
  • SHF Super High Frequency (3,000 to 30,000 MHZ)
  • SHP Shaft Horse Power
  • SID Standard instrument departure
  • SIF Selective Identification
  • SIG Significant
  • SIGMET Information concerning en route weather phenomena which may affect the safety of aircraft operations
  • SIL Service Information Letter
  • SIMUL Simultaneous, or Simultaneously
  • SKC Sky Clear
  • SKED Schedule, Scheduled
  • SL Service Letter
  • SLP Speed Limiting Point
  • SLW Slow, Slowly
  • SM Safety Manager
  • SMC Surface Movement Control
  • SMR Surface Movement Radar
  • SMS Safety management system
  • SN Snow
  • 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
  • SOC Start of Climb
  • SOE Schedule of experience
  • SOM (SoM) System of Maintenance
  • SOPs Standard Operating Procedures
  • SOR Summary of responses
  • SOT Start of TORA (take-off)
  • SP Single Pilot
  • SPA Sport Aviation
  • SPECI Aviation Special Weather (in aeronautical meteorological code)
  • SPFIB Specific Preflight Information Bulletin
  • SPOT Spotwind
  • SPS Standard Positioning Service
  • SQ Squall
  • SR Sunrise
  • SRB Safety Review Board
  • SRD Standard Radar Departure
  • SRG Short Range
  • SRM Structural Repair Manual
  • SRR Search and Rescue Region
  • SRY Secondary
  • SS Sandstorm
  • SS Sunset
  • SSB Single Sideband
  • SSCRO Senate Standing Committee on Regulations and Ordinances
  • SSE South South-East
  • SSI Structural Significant Item
  • SSM System Schematics Manual
  • SSR Secondary Surveillance Radar
  • SST Supersonic Transport
  • SSW South South-West
  • ST Stratus
  • STA Straight in Approach
  • STAR Standard Arrival Route
  • STAR Standard instrumental arrival
  • STARs Standard terminal arrival routes
  • STC Supplemental Type Certificate
  • STD Synthetic training device
  • STD Standard
  • STF Stratiform
  • STN Station
  • STNR Stationary
  • STODA Supplementary Take-off Distance
  • STOL Short Take-off and Landing
  • STS Status
  • STWL Stopway Light(s)
  • SUBJ Subject to
  • SUP Supplement (AIP Supplement)
  • SUPPS Regional Supplementary Procedures
  • SVCBL Serviceable
  • SVY Survey Operations
  • SW South-West
  • SWS Soft Wet Surface
  • SWY Stopway

T

  • T Temperature
  • T-VASIS T’Visual Approach Slope Indicator System (pronounced ‘TEE-VAR-SIS’)
  • TA Transition Altitude
  • TA Traffic advisory
  • TAAATS The Australian Advanced Air Traffic System
  • TAAM Airservices Australia’s Total Airspace Airport and Aerodrome Modeller
  • TAC Terminal Area Chart
  • TACAN Tactical Air Navigation Aid
  • TAF Aerodrome Forecast
  • TAF Terminal Area Forecast
  • TAIL Tailwind
  • TAR Terminal Area Surveillance Area
  • TAS True Airspeed
  • TAT Terminal Area Thunderstorm Service (meteorological term)
  • TAWS Terrain awareness and warning system
  • 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.
  • TAX Taxiing, Taxi
  • TBA To be advised
  • TBO Time Between Overhauls
  • TC Type Certificate
  • TC Tropical Cyclone
  • TCAC Tropical Cyclone Advisory Centre
  • TCAS Traffic alert and collision avoidance system
  • TCDS Type certificate data sheet
  • TCH Threshold Crossing Height
  • TCO Training and Checking Organisation
  • TCTA Trans-continental Control Area
  • TCU Towering Cumulus (met)
  • TDO Tornado
  • TDZ Touchdown Zone
  • TECR Technical Reason
  • TEL Telephone
  • TEM (Illustrated) Tool And Equipment Manual
  • TEM Threat and Error Management
  • TEMPO Temporary, Temporarily (meteorologically)
  • TERPs Terminal and En-route procedures
  • TFC Traffic
  • TFR Terrain Following Radar (by the MIL)
  • TGL Touch & Go Landing
  • TGS Taxiing Guidance System
  • THR Threshold
  • THRU Through
  • TIBA Traffic Information Broadcasts by Aircraft
  • TIL Until
  • TIP Until Past (place)
  • TIS Time in service
  • TKOF Take-off
  • TLOF Touchdown and lift-off area
  • TLS Transponder Landing System
  • TLW Time Limited WIP (work in progress)
  • TMA Terminal Control Area
  • TMG Track Made Good
  • TNA Training Needs Analysis
  • TNA Turn Altitude
  • TNH Turn Height
  • TNS Transitional Surface
  • TOC Top of Climb
  • TODA Take-off distance available
  • TOP Cloud Top
  • TORA Take-off run available
  • TOT Turbine Outlet Temperature
  • TP Turning Point
  • TR Track
  • TRA Temporary Reserved Airspace
  • TRAN Transition
  • TRANS Transmits, Transmitter
  • Trike A manned, powered hang-glider
  • TRL Transition Level
  • 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)
  • TSI Time Since Installation
  • TSO Technical Standard Order
  • TSO Time Since Overhaul
  • TTF Trend Type Forecast
  • TTMRA Trans Tasman Mutual Recognition Agreement
  • TURB Turbulence
  • TWR Aerodrome Control Tower, Aerodrome Control
  • TWY Taxiway
  • TWYL Taxiway Link
  • TYP Type of Aircraft
  • TYPH Typhoon

U

  • U/S Unserviceable
  • UAB Until Advised By
  • UAS Unmanned aerial system (UAV/RPAS)
  • UAV Unmanned aerial vehicles
  • UDF UHF Direction Finding Stations
  • UFIT Uncontrolled Flight Into Terrain
  • UFN Until Further Notice
  • UHDT Unable Higher Due Traffic
  • UHF Ultra High Frequency (300 to 3,000 MHZ)
  • UIR Upper Flight Information Region
  • UK United Kingdom
  • UL Upper Limits
  • UNA Unable
  • UNAP Unable to Approve
  • UNICOM Universal Communications
  • UNL Unlimited
  • UNLC Unlicensed
  • UNREL Unreliable
  • UOC Unmanned operating certificate
  • US FAR Federal Aviation Regulations (of the USA)
  • USA United States of America
  • UTA Upper Control Area
  • UTC Coordinated Universal Time

V

  • V Velocity
  • V1 Take-off Decision Speed
  • V2 Take-off Safety Speed (Applicable to Larger Multi-engine Aircraft)
  • VA Volcanic Ash
  • VA Maximum Manoeuvring Speed
  • VAA-H Visual Approach Area – Helicopter
  • VAAC Volcanic Ash Advisory Centre
  • VAC Visual Approach Chart (followed by name/title)
  • VAL In Valleys
  • VAR Magnetic Variation
  • VASIS Visual Approach Slope Indicator System
  • 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
  • VCY Vicinity
  • VDF VHF Direction Finding Station
  • VEC Visual En-route Chart
  • VER Vertical
  • VFE Flap Extension Speed
  • VFR Visual flight rules
  • VHF Very High Frequency (30 to 300 MHZ)
  • VHFCOM Very High Frequency Communications
  • VIA By way of…
  • VIMD Maximum Drag Speed
  • VIP Very Important Person
  • VIS Visibility
  • VLE Maximum Speed with Landing Gear Extended
  • VLF Very Low Frequency (3 to 30 KHZ)
  • VLJ Very Light Jet
  • VLO Landing Gear Operating
  • VLO2 Landing Gear Operation Down
  • VLOS Visual line of sight
  • VLR Very Long Range
  • VMAN Visual Manoeuvre Speed
  • VMC Visual Meteorological Conditions
  • VMC Minimum Control Speed
  • VMCA Minimum Control Airspeed Airborne (Red line speed)
  • VMCG Minimum Control Airspeed on the Ground
  • VMO Maximum Structural Cruising Speed
  • VNAV Vertical Navigation
  • VNE Never Exceed Speed
  • VNO Normal Operating Speed
  • VOLMET Meteorological Information for Aircraft in Flight
  • VOR VHF Omni-directional Radio Range (OMNI)
  • VP Variable Pitch Propellers
  • VR The speed at which the aircraft is rotated to lift off from the runway
  • VRB Variable
  • VSI Vertical Speed Indicator
  • VSI Clean Stall Speed
  • VSL Vertical speed limit
  • VSO Stalling speed, minimum steady flight speed in the landing configuration
  • VSO Stall speed with undercarriage and flap selected
  • VSSE Safe single-engine Speed
  • VTC Visual Terminal Chart
  • VTOL Vertical take-off and landing
  • VTOSS Take-off Safely Speed
  • VX Best Angle of Climb Speed
  • 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

  • W Watt
  • W West, West Longitude
  • W White
  • W/V Wind Velocity
  • WAAS Wide Area Augmentation System
  • WAC World Aeronautical Chart ICAO 1:1,000,000 (followed by name/title)
  • WAFC World Area Forecast Centre
  • WAFS World Area Forecast System
  • WATIR Weather and Terminal Information Reciter
  • WATOG World Airlines Technical Operations Glossary
  • WB Westbound
  • WBM Weight And Balance Manual
  • WDI Wind Direction Indicator
  • WDSPR Widespread
  • WED Wednesday
  • WEF With Effect From, Effective From
  • WGS-84 World Geodetic System 1984
  • WI Within
  • WID Width
  • WIE With Immediate Effect, Effective Immediately
  • WILCO Will Comply
  • WIND Wind (used in connection with direction and speed) WINTEM Forecast upper wind and temperature at specified points (in aeronautical met code)
  • WIP Work in Progress
  • WKN Weaken, Weakening
  • WM Wiring Manual
  • WMO World Meteorological Organisation
  • WNW West North-West
  • WO Without
  • WS Wind Shear
  • WSW West South-West
  • WT Weight
  • WTSPT Water Spout
  • WWW World Wide Web
  • WX Weather

X

  • X Cross
  • XBAR Crossbar (of approach lighting system)
  • XNG Crossing
  • XS Atmospherics
  • XSEC Extra Section

Y

  • Y Yellow
  • YCZ Yellow Caution Zone
  • YR Your/s

Z

  • Z Coordinated Universal Time (in meteorological messages)

By standtoau


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