ABAS
Aircraft Based Augmentation Systems
ACC
ACCessory
ADF
Automatic Direction Finder
ADLP
Data Link Processor
ADM
Air Data Module
ADS
Air Data System
ADU
Air Data Unit
AEO
All Engines Operating
AEP
Airspeed Envelope Protection (AFCS logic)
A/F
Airframe
AFCS
Automatic Flight Control System
AGB
Accessory GearBox
AGL
Above Ground Level
AHP
Auto HOV Protecio
AHRS
Attitude Heading Reference System
ALS
Ambient Light Sensor
ALS
Above Landing Surface
ALT
ALTtitude hold (AFCS upper modes)
ALTA
ALTitude Acquire (AFCS upper modes)
ALVL
Auto LeVeL mode (AFCS upper modes)
AMMC
Aircraft and Mission Management Computer
AMSL
Above Mean Sea Level
AP
AutoPilot
APCH
Approach
APP
APProach (AFCS upper modes)
ATC
Air Traffic Control
ATS
Above Take off Surface
ATT
ATTitude hold
AWG
Aural Warning Generator
BC
BackCourse (AFCS upper modes)
BL
Buttock Line
BOD
Bottom of Descent
CAS
Calibrated Air Speed
CAS
Crew Alerting System
CAT
Category
C/B
Circuit Breaker
CCD
Cursor Control Devices
CCW
Counter Clock Wise
CCP
Cockpit Control Panel
CDO
Continuous Descent Operation
CDS
Cockpit Display System
CG
Center of Gravity
CLTV
Collective
COEI
Continuous OEI
CPI
Crash Position Indicator
CPLT
Copilot
cs
centistoke
CVR
Cockpit Voice Recorder
CW
Clock Wise
DBU
Data Base Update
d.c./DC
Direct Current
DCL
DeCeLeration mode (AFCS upper modes)
DG
Directional Gyro
DH
Decision Height
DICP
Display Instrument Control Panel
DME
Distance Measuring Equipment
DR
Deak Reckoning
DTK
Desired Track
DV
Direct Vision Window
EAPS
Engine Air Particle Separator
EASA
European Aviation Safety Agency
ECS
Environmental Control System
ECU
Engine Control Unit
EDCU
Enhanced Display Control Unit
EECU
Electronic Engine Control Unit
EGNOS
European Geo Stationary Navigation Overlay System
EGPWS
Enhanced Ground Proximity Warning System
ELT
Emergency Locator Transmitter
EMM
Engine Maintenance Manual
ENG
ENGine
EOP
Engine Oil Pressure
EOT
Engine Oil Temperature
EPU
Estimated Position Uncertainty
ESIS
Electronic Standby Instrument System
ETA
Estimated Time of Arrival
ETE
Estimated Time En Route
ETSO
European Technical Standard Order
EXT
External
FAA
Federal Aviation Administration
FAF
Final Approach Fix
FAP
Final Approach Point
FAS
Final Approach Segment
FCC
Flight Control Computer
FCS
Flight Control System
FCU
Fuel Control Unit
FD
Flight Director
FDR
Flight Data Recorder
FL
Flight Level
FLT
Flight
FML
Flight Management System
FMM
Fuel Management Module
FMS
Flight Management System
FOD
Foreign Object Damage
FOM
Figure of Merit
FOR
Field Of Regard
FTE
Flight Technical Error
FTR
Force Trim Release
FWD
Forward
GA
Go-Around
GATE
Gate (AFCS upper modes)
GBAS
Ground Based Augmentation System
GC
Guidance Controller
GI
Ground Idle
GNSS
Global Navigation Satellite System
GPA
Glide Path Angle
GPS
Global Positioning System
GSPD
Groundspeed (AFCS upper modes)
GS
GroundSpeed
GS
Glide Slope
GW
Gross Weight
Hd
Density altitude
HDG
HeaDinG select (AFCS upper modes)
HF
High Frequency
HFOM
Horizontal Figure Of Merit
HIL
Horizontal Integrity Limit
HIGE
Hover In Ground Effect
HOGE
Hover Out of Ground Effect
HOV
HOVer hold (AFCS upper modes)
Hp
Pressure altitude
HPS
Hydraulic Power Supply
HSI
Horizontal Situation Indicator
HTR
HeaTeR
H-V
Height Velocity
IAF
Initial Approach Fix
IAP
Instument Approach Procedure
IAS
Indicated Air Speed
ICS
Inter Communication System
IGB
Intermediate Gear Box
IFR
Instrument Flight Rules
IGE
In Ground Effect
ILS
Instrument Landing System
INIT
Initialisation
IR
Infrared
ISA
International Standard Atmosphere
ITT
Inter Turbine Temperature
KCAS
Knots - Calibrated Air Speed
KIAS
Knots - Indicated Air Speed
Kts
Knots
LAT
Lateral
LDG/LG
LanDing Gear
LGCP
Landing Gear Control Panel
LH
Left Hand
LIM
Limit
LNAV
Lateral Navigation
LOC
Localizer
LONG
Longitudinal
LOS
Line Of Sight
LP
Localizer performance
LPV
Localizer Performance With Vertical Guidance
LSS
Lightning Sensor System
LT
LighT
MAN
Manual Override System
MAP
Missed Approach Point
MCL
Master Caution Light
MCP
Maximum Continuous Power
MDA
Minimum Descent Altitude
MFD
Multifunction Flight Display
MGB
Main Gear Box
MLG
Main Landing Gear
MMEL
Master Minimum Equipment List
MPOG
Minimum Pitch On Ground
M/R
Main Rotor
MRA
Main Rotor Actuators
MWL
Master Warning Light
NAPP
Navigation APProach (AFCS upper modes)
NAV
NAVigation
NAV AID
Navigation Aids
NAV DB
Navigation(Al) Database
NDCL
Navigation DeCeLeration (AFCS upper modes)
NF
Power turbine speed
NG
Gas generator speed
NGS
Navigation Glide Slope (AFCS upper modes)
NIAS
Navigation Indicated AirSpeed (AFCS upper modes)
NLG
Nose Landing Gear
NLOC
Navigation LOCalizer (AFCS upper modes)
NOTAM
NOtice To AirMen
NPA
Non Precision Approach
NR
Rotor speed
NVG
Night Vision Goggle
NVIS
Night Vision Imaging System
OAT
Outside Air Temperature
OEI
One Engine Inoperative
OGE
Out Of Ground Effect
OR
Operational Range
OS
OverStation mode (AFCS upper modes)
PA
Public Address
PAX
Passengers
PCM
Power Control Module
PF
Pilot Flying
PFD
Primary Flight Display
PI
Power Index
PLT
Pilot
PNF
Pilot Not Flying
PRAIM
Prediction Receiver Autonomous Integrity Monitoring
PSU
Passenger Station Unit
PWR
Power
RA
Radio Altimeter
RAIM
Receiver Autonomous Integrity Monitoring
RCP
Reconfiguration Control Panel
RF
Radius to fix
RFM
Rotorcraft Flight Manual
RH
Right Hand
RHT
Radio Height
RICP
Remote Instrument Control Panel
RNAV
Radio Navigation
RNP
Required Navigation Performance
ROC
Rate Of Climb
RPM
Revolutions Per Minute
SAS
Stability Augmentation System
SBAS
Satellite Based Augmented System
SNSR
SeNSoR
SID
Standard Instrument Departure
SOV
Shut-Off Valve
S/N
Serial Number
STA
Station
STAR
Standard Terminal Arrival Route
STBY
STandBY
TA
Traffic Alert
TAD
Terrain/Obstacle Awareness Display
TAS
True Air Speed
TAWS
Terrain Awareness and Warning System
TCAS
Traffic Collision and Alert System
TCH
Threshold Crossing Height
TD
Transition Down (AFCS upper modes)
TDH
Transition Down to Hover mode (AFCS upper modes)
TDZE
TouchDown Zone Elevation
TGB
Tail rotor Gear Box
TOD
Top of Descent
TOP
Take Off Power
TRA
Tail Rotor Actuator
TQ/TRQ
Engine torque
TRSOV
Tail Rotor Shut Off Valve
TRU
TRUe
TCV
Temperature Control Valve
TU
Transition Up (AFCS upper modes)
UHCU
Universal Hand Control Unit
UNAVL
Unavailable
VAPP
Vor APProach (AFCS upper modes)
VFASS
FlyAway Safety Speed
VDR
VHF - Data Radio
VFR
Visual Flight Rules
VGP
Vertical Glide Path
VMS
Vehicle Monitoring System
VLO
Maximum landing gear operating speed
VLE
Maximum landing gear extended speed
Vmini
Minimum airspeed for flight under IFR
VNAV
Vertical navigation
VNE
Never Exceed speed
VOR
Very high frequency Omni-directional Range
VPATH
Vertical Path
VS
Vertical Speed
VSD
Vertical Situation Display
VSI
Vertical Speed Indicator
VTOSS
Take Off Safety Speed
Vy
Speed for best rate of climb
WAAS
Wide Area Augmentation System
WAT
Weight/Altitude/Temperature
WGT
Weight
WOW
Weight On Wheel
WPT
Waypoint
WTR
Winch Trim
WX
Weather radar
Xfer
Transfer
XPDR
Transponder
XTA
Cross Track Angle
XTK
Cross Track Error