Aviation Acronym Search

720 acronyms shown

• AAircraft (JAR-FCL License)
• AAirspace ICAO Class A
• AASAirport Advisory Serivce
• A/CAircraft NOTE: plural form of "aircraft" takes no "s": aircraft
• A/GAir/Ground (Air to ground and v.v.)
• ACARSAircraft Communications Addressing and Reporting System
• ACASAirborne Collision Avoidance System
• ACCArea Control Center
• ACIAirport Council International
• ACTactive, activated, activation message
• ADAerodrome
• ADAirworthiness Directive
• ADBAirports Database
• ADFAutomatic Direction Finder
• ADCUSAdvise customs
• ADFAutomatic Direction Finder
• ADIZAir Defence Identification Zone
• ADLPAirborne Data Link Processor
• ADSAutomatic Dependent Surveillance
• ADS-AAutomatic Dependent Surveillance-Address
• ADS-BAutomatic Dependent Surveillance-Broadcast
• ADS-CAutomatic Dependent Surveillance-Contract
• AEAAssociation of European Airlines
• AECMAAssociation of European Aerospace Industries
• AFBAir Force Base
• A/FDAirport/Facility Directory
• AFISAerodrome Flight Information Service
• AFMAeroplane Flight Manual
• AFTNAeronautical Fixed Telecommunication Network
• AGAAerodromes and Ground Aids (AIP)
• AGATEAdvanced General Aviation Transport Experiments (NASA)
• A/GAir/Ground Communications
• AGLAbove Ground Level
• AGLOArbeitsgruppe Luftraum-Organisation
• AICAeronautical Information Circular
• AIMATFM Information Message
• AIMAeronautical Information Manual (AIP in USA)
• AIPAeronautical Information Publication
• AIRACAeronautical Information Regulation and Control
• AIRMETAirman's Meterological Information
• AISAeronautical Information Service
• ALTTransponder switch position to activate altitude-reporting feature
• ALTNAlternate
• ALTPAirline Transport Pilot(s Licence)
• AMCAcceptable Means of Compliance
• AMCAirport Movement Control (Zurich)
• AMCAirspace Management Cell
• AMEAero Medical Examiner (FAA, JAA)
• AMEAircraft Maintenance Engineer (Australia)
• AMIEAIS Met Information Equipment (Swiss Computer Self Briefing System)
• AMSAero Medical Services
• AMSLAbove mean sea level
• ANMATFM Notification Message
• ANRAir Navigation Routes
• ANSActive Noise System
• ANSAir Navigation Services
• ANTAirspace Navigation Team (Eurocontrol)
• AOAircraft Operator
• AOPAAircraft Owners and Pilots Association
• AOWIRAircraft Operator What-If Reroute (CFMU/IFPS)
• APPApproach
• ARCIDAircraft Identification
• ARINC(former Aeronautical Radio Inc., now just) ARINC (Manufacturer/Standard Setter)
• ARNATS Route Network
• ARNSAeronautical Radio Navigation Services
• AROAir Traffic Services Reporting Office
• ARPAirport Reference Point
• ARRArrival
• ARTSAutomated Radar Terminal System
• ASAPAs soon as possible
• ASASAirborne Separation Assurance system
• ASOSAutomated Surface Observation System
• ASFAir Safety Foundation (AOPA-USA)
• ASMAir Space Management
• ASPHAsphalt Runway
• ATAActual Time of Arrival
• ATCAir Traffic Control
• ATCRBSAir Traffic Control Radar Beacon System
• ATCOAir Traffic Control Officer
• ATDActual Time of Departure
• ATEActual Time Enroute
• ATFMAir Traffic Flow Management
• ATIRAir Traffic Incident Report ("Near-Miss Report")
• ATISAutomatic Terminal Information Service
• ATMAir Traffic Management
• ATNAeronautical Telecommunication Network
• ATPLAirline Transport Pilot ('s Licence)
• ATSAir Traffic Services
• ATSPAir Traffic Service Provider
• AVGASAviation Gasoline (piston aircraft fuel)
• AWYAirway
• AWOSAutomated Weather Observing System
• BAirspace ICAO Class B
• BABLWBundesamt f‡r Betriebe der Luftwaffe
• BAZLBundesamt f‡r Zivilluftfahrt (Swiss CAA)
• BBJBoeing Business Jet
• BDYBoundary
• BEFBefore
• BFRBiennial Flight Review (USA)
• BFUB‡ro f‡r Flugunfalluntersuchungen
• BRNAVBasic RNAV (RNP-5 compliant)
• BSEBovine Spongiform Encephalopathy (or: mad cow desease)
• CAirspace ICAO Class C
• CCelsius (Centigrade)
• C(-Office)Crew Office (AIS/MET)
• CAACivil Aviation Authority (of a country)
• CASCalibrated Air Speed
• CASACivil Aviation Safety Agency (CAA in Australia)
• CASAComputer Assisted Slot Allocation
• CATCommercial Air Traffic
• CATCommercial Air Transport
• CATClear-Air Turbulence
• CAT IInstrument Landing Category I (similar: CAT II, CAT III)
• CARD IICNS Applications Research & Development
• CAVOKCeiling and Visibility ok (good VFR weather)
• CAVUCeiling And Visibility Unlimited
• CBCumulonimbus
• CBACost-Benefit Analysis
• CDClearance Delivery
• CDAContinuous Descent Approach
• CDICourse Deviation Indicator
• CDMCollaborative Decision-Making
• CDRConditional Route (FUA)
• CDTICockpit Display of Traffic Information
• CEACConfªrence Europªenne de l'Aviation Civile (see ECAC)
• CenterAir Route Traffic Control Center
• CFICertified Flight Instructor (USA)
• CFIICertified Flight Instructor IFR (USA)
• CFITControlled Flight Into Terrain
• CFMUCentral Flow Management Unit of Eurocontrol
• CGCenter of Gravity
• CHCompass Heading
• CHFSwiss Francs (Bankers' code)
• CIACFMU Internet Application
• CILOCapacity Increase LOwer airspace
• CIMICCivil Military Interface standing Committee
• CIVCivil
• CLRClearance (or cleared)
• CLSDClosed
• CLNC DELClearance Delivery
• CNSCommunication Navigation Surveillance
• CNS/ATMCommunication Navigation Surveillance/Air Traffic Management
• CoA, CofACertificate of Airworthiness
• COMCommunications
• COPICo-Pilot
• CPDLCController-Pilot DataLink Capability (or Communications)
• CPLCommercial Pilots Licence
• CRClass Rating
• CRAMConditional Route Availability Message
• CRCOCentral Route Charge Office of Eurocontrol
• CREClass Rating Examiner
• CRIClass Rating Instructor
• CRMCockpit Resource Management
• CRSConditional Route System (FUA: "Temporary Airways" on request)
• CTControl Tower
• CTAFCommon Traffic Advisory Frequency
• CTRControl Zone
• CUCumulus
• CUSTCustoms
• CVFRControlled VFR (still existing in some countries)
• CVRCockpit Voice Recorder
• DAirspace ICAO Class D
• DADecision Altitude
• DAPDownlink Aircraft Parameter (Mode S Transponder)
• dBDecibel
• DCDual Control
• DCADirectorate of Civil Aviation
• DCTdirect
• DEGDegrees
• DELDelay/delayed
• DEPDeparture Control
• DEVDeviation
• DFDirection Finding
• DFSDeutsche Flugsicherung AG
• DGDirector General (or: Direction Gªnªrale e.g. EU)
• DGDirectional Gyro (Gyro Compass)
• DGNSSDifferential GNSS
• DGPSDifferential GPS
• DGTrenDirectorate General Transport and Energy (EU)
• DHDecision Height
• DLADelay (Message of an ICAO FPL)
• DMEDistance Measuring Equipment
• DOFDate of Flight
• DUATDirect User Access Terminal (US Computer Self-Briefing system)
• EEast
• EAirspace ICAO Class E
• EAAExperimental Aircraft Association
• EADEuropean AIS Database
• EAGEuropean ATFM Advisory Group
• EANPGEuropean Air Navigation Planning Group (ICAO)
• EASEuropean Air Sports
• EASAEuropean Aviation Safety Authority (planned to replace JAA)
• EATCHIPEuropean Air Traffic Control Harmonization Implementation Project
• EATMSEuropean Air Traffic Management System
• EATMPEuropean Air Traffic Management Plan
• EBAAEuropean Business Aviation Association
• ECEuropean Commission
• ECACEuropean Civil Aviation Conference ("Association" of Europe's CAAs)
• ECOGASEuropean Council of General Aviation Support
• EETEstimated Elapsed Time
• EFATOEngine Failure At Take-Off (JAR-FCL)
• EFDPEuropean Flight Data Processing
• EFASEnroute Flight Advisory Service (Flight Watch)
• EFISElectronic Flight Instrumentation System
• EGNOSEuropean Geostationary Navigation Overlay System
• EHSEnhanced Surveillance (Mode S, 2nd step)
• ELACEnroute Low Altitude Chart
• ELBAEmergency Locator Beacon-Aircraft
• ELEVElevation
• ELTEmergency Locator Transmitter (crash-activated transmitter)
• ENPRMEurocontrol Notice of Proposed Rule Making
• EOBTEstimated off-block time
• EPEuropean Parliament
• ERAEuropean Regional Airlines Association
• ESAEuropean Space Agency
• ESCEconomic Social Committee
• ETAEstimated Time of Arrival
• ETDEstimated Time of Departure
• ETEEstimated Time Enroute
• ETFMSEnhanced Tactical Flow Management System
• ETSIEuropean Telecommunication Standardizatio Institute
• ETOPSExtended Range Twin-Engine Operations (or: Engines Turn Or Passengers Swim)
• EUEuropean Union
• EUAPAEuropean Union Airplane Pilots Association
• EUREuropean Region
• EUREuro (currency)
• EUROCAEEuropean Organisation for Civil Aviation Equipment
• FAirspace ICAO Class F
• FFahrenheit
• FAArea Forecast (Meteo)
• FAAFederal Aviation Administration
• FADECFull Authority Digital Engine Control
• FAFFinal Approach Fix
• FAWPFinal Approach Waypoint
• FANSFuture Air Navigation System (an ICAO project group)
• FARsFederal Aviation Regulations (+Number)
• FBOFixed Base Operator
• FCCFederal Communications Commission (USA)
• FCLFlight Crew Licensing
• FCTFederal Control Tower
• FCMFlight Confirmation Message
• FDWinds and Temperature aloft Forecast
• FDRFlight Data Recorder
• FEFlight Examiner
• FIFlight Identity (Code) - (Mode S Transponder)
• FIFlight Instructor
• FICFlight Information Center
• FIEFlight Instructor Examiner
• FIOFlight Information Office
• FIRFlight Information Region
• FISFlight Information Service
• FFASFree Flight Air Space (Eurocontrol Definition)
• FLFlight Level, Altitude x100 = feet AMSL (FL 70 = 7000ft) at ISA
• FLOSFlight Level Orientation System
• FLTFlight
• FMFrequency Modulation
• FMDFlow Management Division (CFMU/Eurocontrol)
• FMPFlow Management Position (local Slot coordinator)
• FMSFlight Management System
• FNPTFlight Navigation and Procedure Trainer
• FOCAFederal Office for Civil Aviation (Swiss CAA - see BAZL)
• FPLFlight Plan (for ATC)
• fpmfeet per minute (vertical speed)
• FSDMFlight Statistical Development Management
• FSDOFlight Standard District Office (FAA USA)
• FSSFlight Service Station
• ftfeet (approx 0.3 Meters)
• FTDFlight Training Device (lower category "simulator")
• FTOFlight Training Organisation (Flight School)
• FUAFlexible Use of Airspace
• FVSFliegerische Vor-Schulung
• GAcceleration force unit (1G = Earth Gravity)
• GAirspace ICAO Class G
• GAGeneral Aviation (mainly private and business aviation)
• GA&AW GA/AWGeneral Aviation and Aerial Work (all non-commercial civil aviation)
• GACGeneral Aviation Center
• GAFORGeneral Aviation Forecast (Weather)
• GALGallons (usually US 3.78 liter, may be Imperial 4.54 liter)
• GAMAGeneral Aviation Manufacturers Association (USA)
• GATGeneral Aviation Terminal
• GATTGeneral Agreement on Trade and Taxes
• GBASGround Based Augmentation System (DGNSS/DGPS/LAAS)
• GCGround Control
• GCAGround Controlled Approach ("Talk-down")
• GCIGround Communication Infrastructure
• GENGeneral
• GENDECGeneral Declaration Customs Form see full size, download zipped form,
• GFTGeneral Flight Test (JAR-FCL)
• GHzGigahertz (1'000 MHz or 1'000'000'000 Hertz)
• GLDGlider
• GLONASSGlobal Orbitting Navigation Satellite System (Russian GNSS)
• GLSGPS Landing System
• GM-P10GM=Morocco, P10=Prohibited Area No. 10.
• GNDGround
• GNSSGlobal Navigation Satellite System (Satellite Navigation in General)
• GPAGroupe Parlementaire pour l'Aviation
• GPHGallons (US) per hour
• GPSGlobal Positioning System (USA GNSS), see also FAA GPS Product Team
• GPWSGround Proximity Warning System
• GSGround Speed
• GSCGlobal Signalling Channel (VDL-4)
• GSMGeneral Standard for Mobile Communication (Mobile phones)
• HHelicopter (JAR-FCL)
• HB-Swiss nationality marks for aircraft registration
• hPaHecto-Pascal. Unit to measure pressure (e.g. weather reports)
• HDGHeading
• HELHelicopter
• HFHigh Frequency
• HgMercury (Unit for pressure measurement inHg etc.)
• HIRLHigh Intensity Runway Lights
• HJOperating hours during daylight
• HMIHuman Machine Interface
• HOLHolidays (MON-TUE-WED-THU-FRI-SAT-SUN-HOL)
• HPHorsepower
• HQHeadquarters
• HSIHorizontal Situation Indicator
• HXOperating hours on request
• H24Operating 24 hours
• IACAInternational Air Charter Association
• IAFInitial Approach Fix
• IAOPAInternational Council of Aircraft Owner and Pilot Associations
• IAOPA-EURIAOPA European Region
• IASIndicated Air Speed
• IAS-TFBImplementation Air Space Task Force Group B (Eurocontrol)
• IATAInternational Air Transport Association
• IAWPInitial Approach Waypoint
• ICInterogator Codes (II and SI codes)
• ICAOInternational Civil Aviation Organization (a UN-Suborganisation)
• IDIdentification
• IFPSInitial Flightplan Processing System of Eurocontrol
• IFRInstrument Flight Rules ("all" weather operations rules)
• IG(al)Imperial Gallon (4,54 Liter)
• IIInterogator Identity (Code) - (Mode S Transponder)
• ILSInstrument Landing System
• IMInner Marker
• IMCInstrument Meteo Conditions (weather requiring IFR flight)
• ininch
• inHginches of Mercury (unit of pressure)
• INSIntertial Navigation System
• IPGIFR Procedure Group
• IPPLNational (ICAO) Private Pilots License (AOPA internal abbreviation)
• IRInstrument Rating
• IRInfra Red
• IREInstrument Rating Examiner
• ISAICAO Standard Atmosphere
• ISAInternational Standard Atmosphere ) Unclear which one is corrct!
• ITUInternational Telecommunication Union
• JAAJoint Aviation Authorities (CAA of Europe)
• JARJoint Aviation Recommendation (as used in some JAA documents, reported false!)
• JARJoint Aviation Regulation (as used in some JAA documents, reported false!)
• JARJoint Aviation Requirement
• JAR-1JAR on Definitions and abbreviations
• JAR-22JAR on Sailplanes and and Powered Sailplanes
• JAR-25JAR on Large Airplanes
• JAR-36JAR on Aircraft Noise
• JAR-145JAR on Approved Maintenance Organisations
• JAR-147JAR on Maintenance Training
• JAR-APUJAR on Auxiliary Power Units
• JAR-AWOJAR on All Weather Operations
• JAR-EJAR on Engines
• JAR-FCLJAR on Flight Crew Licensing
• JAR-MEDJAR on Medical
• JAR-PJAR on Propellers
• JAR-TSOJAR on Technical Standard Orders
• JAR-OPSJAR on Flight Operations
• JAR-VLAJAR on Very Light Aeroplanes
• JET-A1Jet Fuel type A1
• JPPLJAR-FCL Private Pilots License (AOPA internal abbreviation)
• JSAJoint Steering Assembly (JAA)
• JURGJoint User Requirement Group
• KAirspace Eurocontrol Project Class K (all traffic known)
• kHzKilohertz (1'000 Hertz)
• KIASknots indicated air speed
• KOSIFKoordinationsstelle f‡r Schiess-Informationen (Swiss MIL Shooting)
• KPIKey Performance Indicator
• kphKilometers per hour
• KTASknots true air speed
• kt(s)knots (1.852 km/h)
• LAASLocal Area Augmentation System
• LAHSOLand And Hold Short Operation (to cross intersecting runway)
• LATLatitude
• LBALuftfahrt-Bundes-Amt (German CAA)
• lbstPounds of static thrust
• LDALanding Distance Available
• LDGLanding
• LHLefthand
• LI-R5LI=Italy, R5=Restricted Area No. 5
• LIRLLow Intensity Runway Lights
• LLWASLow Level Wind Shear Alert System
• LLZLocalizer (approach system)
• LNAVLateral Navigation (GLS)
• LOCLocal, Location, Localizer
• LONGLongitude
• LORAN(-C)Long Range Navigation
• LSCLocal Signalling Channel (VDL-4)
• LS-D12LS=Switzerland, D12=Danger Area No. 12
• LTLocal Time
• MACMean Aerodynamic Chord
• MAHWPMissed Approach Holding Waypoint
• MAPMap section of AIP
• MASManaged Airspace (Eurocontrol Definition for ATM2000+)
• MAS UACMaastricht Upper Airspace Center
• MASPMinimum Aviation System Performance
• MATSEECAC Transport Ministers Meeting on the Air Traffic System in Europe
• MATZMilitary ATZ
• MAUWMaximum All-Up Weight
• MAWPMissed Approach Waypoint
• mbMillibar (replaced by hPa)
• MCIMobile Communication Infrastructure
• MCTRMilitary CTR
• MDMedical Doctor
• MDAMinimum Descent Altitude
• MEMulti Engine
• MEAMinimum Enroute Altitude
• MELMinimum Equipment List
• MELMulti-Engine Land
• MEPMember of Parliament
• MEPMulti Engine Piston
• METMeteo (office, report, service etc.)
• METARMeteorological Actual Report (current weather)
• MHMagnetic Heading
• MHzMegahertz (1'000 kHz)
• MILMilitary
• MLSMicrowave Landing System
• MLWMaximum Landing Weight
• MMMiddle Marker
• MMRMulti-Mode Receiver
• MNPSMinimum Navigation Performance Specifications
• MOCAMinimum Obstacle Clearance Altitude
• MODModerate
• MOGASMotor Gasoline (Auto-Gas)
• MONMotor Octane Number (aviation fuel rating)
• MONMonday (MON-TUE-WED-THU-FRI-SAT-SUN-HOL)
• MOPSMinimum Operation Performance Standards
• MOTMinistry of Transport
• MPMulti-Pilot
• MPAMulti-Pilot Aeroplane
• MPHMulti-Pilot Helicopter
• mphMiles per hour (statute miles, 1.609 km/h)
• MRVAMinimum Radar Vector Altitude
• MRWMaximum Ramp Weight
• MSAMinimum Safe Altitude
• MSGMessage
• MSLMean Sea Level
• MTMagnetic Track
• MTOMMaximum Take-Off Mass
• MTOWMaximum Take-Off Weight
• MVAMinimum Vectoring Altitude
• MZFWMaximum Zero-Fuel Weight
• M$Megadollars (1'000'000 US dollars)
• NAirspace Eurocontrol project Class N (managed traffic only)
• NNorth
• n/anot available or not applicable
• N(....)Country identifier for aircraft registered in USA
• NAANational Aviation Authority (generic term within JAA)
• NASANational Aeronautics and Space Agency (USA)
• NATNorth Atlantic
• NATSNational Air Traffic Service (UK)
• NavaidNavigation Aid (Ground Radio Station for Navigation)
• NAVNavigation
• NDBNon Directional Beacon
• NEANNorth European ADS-B Network
• NELSNorthwest Europe Loran Steering Committee
• NIMBY"Not In My Back-Yard"-Syndrome: "We need an airport but not here"
• NILNothing, no information
• NM, nmiNautical Mile (1.852 km)
• NOSARNo Search and Rescue required (Australia)
• NOTAMNotice to Airmen
• NOTARNo Tail Rotor
• NPANotice of Proposed Ammendment (JAR)
• NPONon-Profit Organisation
• NPPLNational (ICAO) Private Pilots License (AOPA internally used: IPPL)
• NPRMNotice of Proposed Rule-Making (USA)
• NTSBNational Transport Safety Board (USA)
• NVFRNight VFR
• NWNorth-west
• O/Ron request
• OACIOrganisation de l'Aviation Civile Internationale (voir ICAO)
• OATOutside Air Temperature
• OBSOmni Bearing Selector (VOR)
• OBSTObstacle, obstruction
• OCDOperational Concept Document
• ODIACOperational Development of Initial Air/ground Data Communications
• ODTOperational Requirements and Data Processing Systems Team
• OFACOffice Fªdªrale de l'Aviation Civile (Swiss CAA - voir BAZL)
• OMOuter Marker
• OMSOuter Marker Substitute (sort of a virtual OM)
• ONCOperational Navigation Chart
• OPSOperations (or Operating hours)
• p/pper person, per passenger
• PAPIPrecision Approach Path Indicator
• PARPrecision Approach Radar
• PARTPressure Altitude Reporting Transponder
• PAXPassenger(s)
• PCLPilot Controlled Lighting (RWY Lights operated by Microphone)
• PETALPreliminary Eurocontrol Trial Air/ground Data Link
• PGLParlamentarische Gruppe f‡r Luftfahrt
• PiCPilot in Command
• PIREPPilot (weather) Report
• PNRPrior Notice Required
• POBPersons on Board
• PP(L)Private Pilots Licence (general)
• PPL APrivate Pilots Licence Aeroplane
• PPL HPrivate Pilots Licence Helicopter
• PPL/IRAssociation of PPL holders with Instrument Rating
• ppmParts Per Million
• PPMPossible Pricing Mechanism (Eurocontrol)
• PPOPrior Permission Only
• PPRPrior Permission Required
• PRCPerformance Review Commission (Eurocontrol)
• PRKPhoto Refractory Keratomy (eye surgery)
• PRNAVPrecision RNAV (RNP-1 or less compliant)
• PSGProgram Steering Group
• PSIPounds per square inch
• PSIAPlan Sectoriel d'Infrastructure AÃronautique
• PTProcedure Turn
• PVTprivate
• QDR(Q-Code) for Homing Track from a Station
• QDM(Q-Code) for Homing Track to a Station
• QGO(Q-Code) for Airport Closed
• QFE(Q-Code) for Air Pressure in hPa on Ground (airport elevation)
• QNH(Q-Code) for Air Pressure in hPa calculated to MSL
• QUAMGOQuasi-Monopoly Government Organisation
• RRating
• R&DResearch and Development
• RAResolution Advisory (TCAS)
• RAFRoyal Air Force
• RAIMReceiver Autonomous Integrity Monitoring
• RBRelative Bearing (NAV)
• RBASReceiver Based Augmentation System (DGNSS/DGPS)
• RCARecommended Crossing Altitude
• RCARemote Client Application (CFMU)
• REAReady Message
• REILRunway End Identifier Lights
• RFRadio Frequency
• RFRegistered Facility ("national" flight school as per JAR-FCL)
• RFIRequest For Improvement Message (slot)
• RFPReglement ‡ber die Ausweise f‡r das Flugpersonal
• RHRighthand
• RIARegulatory Impact Assessment
• RMRegional Meeting
• RMIRadio Magnetic Indicator
• RMKRemark(s)
• RNAVArea Navigation
• RNPRadio Navigation Plan
• RNPRequired Navigation Performance
• RNP-naccuracy of +/- n NM during 95% of flight must be maintained
• RNSSRadio Navigation Satellite Services
• ROCRate of Climb
• RONResearch Octane Number (Auto fuel rating)
• RONRemain Over Night
• RPLRepetitive Flight Plan
• RPMRevolutions per Minute
• RPNRªglement pour le Personnel Navigant
• RPPLRestricted PPL
• RSORoute per State Overflown
• RTCA(formerly) Radio Technical Commission for Aeronautics, now RTCA Inc.
• RT(F), R/TRadio Telephony
• RTARemote Terminal Access (CFMU)
• RUSCRVSM User Support Cell
• RVRRunway Visual Range
• RVSMReduced Vertical Separation Minima (1000ft above FL 290)
• RW, RWYRunway
• RxTxReceiver-Transmitter
• s/nserial number
• SARSearch and Rescue
• SARPStandards And Recommended Practices (usually "Sarps" =plural form)
• SATSaturday (MON-TUE-WED-THU-FRI-SAT-SUN-HOL)
• SATSatellite ...
• SATNAVSatellite Navigation (generic)
• SBService Bulletin
• SBASSpace Based Augmentation System (DGNSS/DGPS/WAAS/EGNOS)
• SCStratocumulus
• SESingle-Engine
• SELSingle-Engine Land
• SEPSingle-Engine Piston
• SFCSurface
• SFESynthetic Flight Examiner
• SGSub-Group (of Eurocontrol Working Groups)
• SISurveillance Identity (Code) - (Mode S Transponder)
• SIDStandard Instrument Departure
• SIGMETSignificant Meteo (hazardous weather warning)
• SIMSimulator
• SILSachplan Infrastruktur Luftfahrt
• SIPSlot Improvement Proposal Message
• SIROSimultaneous Intersecting Runway Operation
• SITASociªtª Internationale de Tªlªcommunication Aªronautique
• SLSea Level
• SLPSpeed Limit Point
• SMStatute Mile (1.609 km -
• SMESmall and Medium Enterprises
• SMELSingle/Multi Engine Land
• SMGCSSurface Movement Guidance and Control System
• SMMSlot Missed Message
• SMSShort Message System (Mobile Telephone Feature)
• SPSingle Pilot
• SPASingle Pilot Aeroplane
• SPASlot Improvement Proposal Acceptance Message
• SPECISpecial Report (Meteo)
• SPHSingle Pilot Helicopter
• SPICStudent Pilot in Command (JAR-FCL)
• SRSunrise
• SRJSlot Improvement Proposal Rejection Message
• SRRSlot Revision Request Message
• SRSStandard Routing Scheme (ARN)
• SSSunset
• SSTSlot Start Time
• SSTSuper Sonic Transport
• STAScheduled Time of Arrival
• STARStandard Arrival
• STCSupplemental Type Certificate
• STDScheduled Time of Departure
• STDSynthetic Training Device
• STDMASelf-Organizing Time Division Multiple Access (VDL)
• SUNSunday (MON-TUE-WED-THU-FRI-SAT-SUN-HOL)
• SVFRSpecial VFR
• SWCSignificant Weather Chart
• SWMSIP Wanted Message
• t / Ttonne
• t/otake-off
• TATransition Altitude
• TACANTactical Air Navigation
• TACTTactical System (CFMU)
• TAFTerminal Area Forecast (weather forecast)
• TASTrue Air Speed
• TBOTime between overhaul
• TCTrue Course
• TCASTraffic alert and Collision Avoidance System
• TCHThreshold Crossing Height
• TDMATime Division Multiple Access (VDL)
• TFTask Force
• TGLTechnical Guidance Leaflet (JAA)
• THTrue Heading
• THRThreshold
• TIS-BTraffic Information System - Broadcast
• TKOFTake-Off
• TLSTransponder Landing System
• TMATerminal (Control) Area
• TMGTouring Motor Glider
• TNCTactical Navigation Chart
• TPIATransition Plan for Implementation of Airspace Strateby
• TPCTactical Piloting Chart
• TSMOTime since major overhaul
• TSOTechnical Standard Order
• TRType Rating
• TREType Rating Examiner
• TRIType Rating Instructor
• TRTOType Rating Training Organisation
• TTTotal Time (since new or since ...)
• TTTrue Track
• TWRTower (Control Tower)
• UAirspace Eurocontrol project Class U (unknown traffic)
• u/sunserviceable
• UATUniversal Access Transceiver
• UAVUnmanned (or Uninhabited) Aeronautical (or Aerial) Vehicle
• UFNUntil Further Notice
• UFOUnidentified Flying Object
• UHFUltra High Frequencies (300 MHz-30 GHz)
• UL, ULMUltralight, Ultra-lªger motorisª
• UMASUnmanaged Air Space (Eurocontrol Definition)
• URBUser Relations Bureau (CFMU)
• USAFUS Air Force
• USG(al)US-Gallon (3.78 Liter)
• UTCUniversal Time Coordinated
• VSpeeds (see box for details)
• VALVisual Approach and Landing (Chart)
• VARVariation
• VASIVisual Approach Slope Indicator
• VATValue Added Tax
• VDLVHF Data Link (-n = type n)
• VFRVisual Flight Rules ("good" weather operations rules)
• VHFVery High Frequency (30-300 MHz)
• VISVisual, Visibility
• VJAR-FCLVerordnung JAR-FCL (JAR-FCL transformed to Swiss Law)
• VLAVery Light Aircraft (Aircraft certification category)
• VLAVery Large Aircraft (NATO description for future transport aircraft)
• VMCVisual Meteo Conditions ("good" weather for VFR or IFR)
• VNAVVertical Navigation (GLS)
• VORVHF Omnidirectional Radio-Range
• VORTACVOR/TACAN Station (combined)
• VOR/DMECombined VOR and DME radio station
• WA(IAOPA) World Assembly
• WAASWide Area Augmentation System
• WCAWind Correction Angle
• WGS-84World Geodetic System of 1984
• WIPWork in Progress
• WMOWorld Meteorological Organisation
• WP, WPTWaypoint
• WWII2nd World War
• WXWeather
• XPDRTransponder. Radar-enhancement/datalink box for ATC purposes.
• Y2kYear-2000 (computer date problem)
• ZZulu Time (=UTC)
• 4D (NAV)4-Dimensional Navigation (LONG LAT ALT TIME)
• 406 MHzEmergency Locater Beacon (or Transmitter) on 406 MHz Frequency
• 8.33 (kHz)Communication Frequences with 8.33 kHz channel spacing
• 80/87AVGAS of 80 (best mixture)/87 octane (full rich mixture)
• 82ULAVGAS of 82 (best mixture) octane (approx 90 octane full rich) unleaded
• 91/96ULAVGAS of 91 (best mixture)/96 octane (full rich mixture) unleaded
• 100/130AVGAS of 100 (best mixture)/130 octane (full rich mixture)
• 100LLAVGAS of 100 (best mixture)/130 octane (full rich) low lead (=most used)
• 5 by 5Five by five is an expression used in aviation (and maybe other) radio communication to indicate the quality and loudness of received voice transmissions. Rated one to five indicates - first figure - clearness and - second - loudness. Five by five means that a transmission is received clear and loud (in clear words usually loud and clear is used...). One by one, on the other hand, means it can hardly be heard and is not understandable. If you have a loud but distorted transmission, you may hear two by five, and a weak but clearly understandable one may be called five by three... The definition of this must be included somewhere in a radiotelephony document of ICAO (International Civil Aviation Organisation)
• IPAI/DSIdentification-Posistion-Altitude-Intentions or Destination-Squawk
• MOAMilitary Operations Area
• HIWASHazardous Inflight Weather Advisory Service
• MRAMinimum Reception Area
• MTRMilitary Training Route
• MulticomNongovernment air-to-air radio communicaton frequency
• NFNon-Federal Control Tower
• NFCTNon-Federal Control Tower
• RAPCONRadar Approach Control (military)
• RCORemote Communications Outlet
• RDT&EResearch, Development, Testing and Evaluation
• SBYStandby (a transponder switch posistion)
• SFARSpecial Federal Aviation Regulation
• TWEBTranscribed Weather Broadcast
• XFSSAuxiliary Flight Service Station
• WilcoWill Comply
• ZULUUTC time frequency cites as ___ Zulu Time
• SUASpecial VFR rules and operations

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