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Glossary

AbbreviationDecode
AAIBAir Accident Investigation Branch
AALAbove Airfield Level
AANAirworthiness Approval Note
AcAltocumulus
ACAir Conditioning
ACAdvisory Circular
ACAlternating Current
ADAirworthiness Directive
ADFAutomatic Direction Finder
ADIAttitude Director Indicator
ADRAdvisory Route
AGLAbove Ground Level
AHArtificial Horizon
AIAttitude Indicator
AIPAeronautical Information Publication
AltAltitude
AMCAcceptable Means of Compliance
AMEAuthorised Medical Examiner
AMOCAlternative Method of Compliance
AMSLAbove Mean Sea Level
ANGRAir Navigation (General) Regulations
ANOAir Navigation Order
ANRActive Noise Reduction
AoAAngle of Attack
AOPAAircraft Owners and Pilots Association
APIActuator Position Indicator
APUAuxillary Power Unit
ARCAirworthiness Review Certficate
ASIAirspeed Indicator
ATAActual Time of Arrival
ATISAutomatic Terminal Information Service
ATPLAirline Transport Pilots License
ATSINAir Traffic Services Information Notice
AUMAll Up Mass
AUWAll Up Weight
AvgasAviation Gasoline
BABalance Arm
BALPABritish Airline Pilots Association
BCNBeacon
BEMBasic Empty Mass
BHABBritish Helicopter Advisory Board
BHPBrake Horsepower
BKNBroken (5-7 octas cloud cover)
BOCASBase of Controlled Airspace
BrgBearing
BTBolletino Technico
CAACivil Aviation Authority
CAPCivil Aviation Publication
CASCalibrated Airspeed
CBCumulonimbus
CdCoefficient of Drag
CFIChief Flying Instructor
CGCenter of Gravity
CGIChief Ground Instructor
CHTCylinder Head Temperature
ClCoefficient of Lift
CMRCertificate of Maintenance Review
CofACertificate of Airworthiness
ComCommunication
CPChief Pilot
CPLCommercial Pilots License
CRSCertificate of Release to service
CrsCourse
CTMCentrifugal Turning Moment
CuCumulus
DADecision Altitude
DCDirect Current
DCTDirect
DHDecision Height
DIDirection Indicator
DMEDistance Measuring Equipment
DOIDry Operating Index
DOMDry Operating Mass
DRDead Reckoning
EASEquivalent Airspeed
EASAEuropean Aviation Safety Agency
ECSEnvironmental Control System
EGTExhaust Gas Temperature
EICASEngine Indication and Crew Alerting System
ELTEmergency Locator Transmitter
ETAEstimated Time of Arrival
ETEEstimated Time Enroute
FAAFederal Aviation Administration
FAFFinal Approach Fix
FAPFinal Approach Point
FCLFlight Crew Licensing
FI [R]Flying Instructor [Restricted]
FLFlight Level
FMFrequency Modulation
FMFlight Manual
FREDAFuel, Radio, Engine, Direction, Altitude
FTOFlying Training Organisation
GAGeneral Aviation
GHzGigahertz
GNCGPS / Nav / Com
GPHGallons Per Hour
GPSGlobal Positioning System
GSGlide Slope
GSGround Speed
H2424 Hour Service
HCGBHelicopter Club of Great Britain
HdgHeading
HISLHigh Intensity Strobe Light
HJSunrise to Sunset
HNSunset to Sunrise
HOBy Operational Requirements
HoTHead of Training
HSDuring Hours of Scheduled Operations
HSIHorizontal Situation Indicator
HXNo Specific Working Hours
HzHertz
IAFInitial Approach Fix
IASIndicated Airspeed
ICAOInternational Civil Aviation Organization
IFInstrument Flying
IFInduced Flow
IFRInstrument Flight Rules
IGEIn Ground Effect
ILSInstrument Landing System
IMCInstrument Meteorological Conditions
InopInoperative
INSInertial Navigation System
IPSInches Per Second
IRInstrument Rating
IRSInertial Reference System
ISAInternational Standard Atmosphere
JAAJoint Aviation Authorities
JARJoint Aviation Regulations
KHzKilohertz
KMKilometer
LAELicenced Aircraft Engineer
LFLLower Flammable Limit
LILoading Index
LODALetter Of Design Approval
LPCLicense Proficiency Check
LSTLicense Skills Test
MAGMagnetic
MCASDMilitary / Civil Air Safety Day
MCCMulti Crew Cooperation
MCDMagnetic Chip Detector
MCDMagnetic Chip Detector
MCPMaximum Continuous Power
MDAMinimum Descent Altitude
MDHMinimum Descent Height
MELMinimum Equipment List
MHzMegahertz
MLSMicrowave Landing System
MMELMaster Minimum Equipment List
MRMain Rotor
MSDSMaterial Safety Data Sheet
MSLMean Sea Level
MSLMMaximum Structural Landing Mass
MZFMMaximum Zero Fuel Mass
N1Gas Producer Speed
N2Power Turbine Speed
NATSNational Air Traffic Services
NavNavigation
NDBNon Directional Beacon
NMNautical Mile
NOTAMNotices To Airmen
NPANon Precision Approach
NPANotice Of Proposed Amendment
NSNimbostratus
NSWNo Significant Weather
NTSBNational Transportation Safety Board
OATOutside Air Temperature
OCAObstacle Clearance Atlitude
OGEOut of Ground Effect
OMOperating Mass
OMOuter Marker
OMLOperational Multi-Crew Limitation
OPCOperator Proficiency Check
OpsOperations
OSOrdnance Survey
OVCOvercast (8 octas cloud cover)
PANS-OPSProcedures for Air Navigation Services, Operations
PAOCPolice Air Operators Certificate
PAPIPrecision Approach Path Indicator
PARPrecision Approach Radar
PETPoint of Equal Time
PFPilot Flying
PFAPopular Flying Association
PFMPilots Flight Manual
PLDPersonnel Licensing Department
PLLMPerformance Limited Landing Mass
PMAParts Manufacturer Approval
PNFPilot Not Flying
PNRPoint of No Return
POHPilots Operating Handbook
PPLPrivate Pilots License
PPOPrior Permission Only
PPRPrior Permission Required
QASPQualified, Authorized, Supervised and Prepared
QDMMagnetic Bearing To Facility
QDRMagnetic Bearing From Facility
QFUMagnetic Orientation Of Runway
RAFRelative Air Flow
RAFATRoyal Air Force Aerobatic Team
RASRectified Airspeed
REILRunway End Identifier Lights
RFMRotorcraft Flight Manual
RLRunway (edge) Lights
RLMRegulated Landing Mass
RMIRelative Magnetic Indicator
RoCRate Of Climb
RoDRate Of Descent
RPMRevolutions Per Minute
RTRotor Thrust
RTRadio Telephony
RTFRegistered Training Facility
RTOMRegulated Take Off Mass
RVRRunway Visual Range
SAIBSpecial Airworthiness Information Bulletin
SARSearch And Rescue
SASStability Augmentation System
SBService Bulletin
SCTScattered (3-4 octas cloud cover)
SIDStandard Instrument Departure
SKCSky Clear
SMStatute Mile
SMIScheduled Maintenance Inspection
SOAPSpectrometric Oil Analysis Programme
SOAPSpectrographic Oil Analysis Program
SRASurveillance Radar Approach
SSRSecondary Surveillance Radar
STARStandard Terminal Arrival
STCSupplemental Type Certificate
STOLShort Take Off and Landing
SWPSettling With Power
TAFTerminal Area Forecast
TASTrue Airspeed
TBOTime Between Overhauls
TITSTune, Identify, Test, Set
TMGTouring Motor Glider
TMGTrack Made Good
TODRTake Off Distance Required
TOGWTakeoff Gross Weight
TOMTake Off Mass
TOPTakeoff Power
TOSRTake Off Space Required
TqTorque
TRTail Rotor
TRType Rating
TREType Rating Examiner
TRIType Rating Instructor
TRKTrack
TRTTotal Rotor Thrust
TRTOType Rating Training Organisation
TSOTechnical Standard Order
TTFTTTime, Turn, Flap, Throttle, Talk
VARVariation
VASIVisual Approach Slope Indicator
VCFGFog In Vicinity
VFRVisual Flight Rules
VhStabilised Level Flight Speed at MCP
ViVelocity of Induced Flow
VMCVisual Meteorological Conditions
VneVelocity Never to be Exceeded
VnoMaximum Structural Cruise Speed
VRBVariable
VRSVortex Ring State
VSABy Visual Reference to the ground.
VSIVertical Speed Indicator
VSPVertical Speed
VTOLVertical Take Off and Landing
VVVertical Visibility
W&BWeight And Balance
WBWeight And Balance
XpdrTransponder
ZFMZero Fuel Mass
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