Airbus Terms and Abbreviations (Selection)

V-Speeds

V-Speed	Term
V₁	- The highest speed during take-off that you can reject the take-off and still stop on the runway. - The lowest speed from which a takeoff can be safely continued within the takeoff distance after an engine failure at the critical engine failure speed.
V₂	Take-off safety speed the aircraft attains no later than an altitude of 35 feet and is maintained during the 2nd segment of takeoff with one engine failed.
V_A	The maximum speed at which a full control deflection in one direction should be made in normal or alternate law.
V_APP	Speed for flying down the approach.
V_D / M_D	Maximum structural design limit speed and Mach
V_F	Design Flap Speed
V_FE	Maximum Flap Extended Speed.
V_FEN	Predictive V_FE at next flap/slat position
V_FTO	Final Takeoff Speed
V_LE	Maximum gear extension speed, often lower than the operating speed to prevent gear door damage.
V_LO	Maximum gear operating speed, which means the max speed for the gear being down.
V_LOF	Lift-off Speed
V_LS	Lowest Selectable Speed
V_MAX	Airbus for the maximum speed for the current configuration, represented by black and red strip at the top of the airspeed indication.
V_MCA	Minimum speed in the air that if one engine fails and the other is at TO thrust, you can still control the aircraft with the primary flight controls up to a bank of 5 degrees.
V_MCG	Minimum speed on the ground that if one engine fails and the other is at TO thrust, you can still control the aircraft with the primary flight controls.
V_MO / M_MO	Maximum operating speed, also has M_MO for maximum Mach number.
V_R	Rotate speed. The speed at which the pilot pulls back on the stick to pitch the airplane to the takeoff attitude.
V_REF	Reference speed for a normal approach at the 50 foot height.
V_S	Stalling Speed at which Airplane is Controllable
V_S1	Stalling Speed or Minimum Steady Flight Speed obtained in a specified Configuration
V_SO	Stalling Speed or Minimum Steady Flight Speed in the Landing configuration
V_SW	Airbus for when the stall warning will activate, represented by a black and red strip at the bottom of the airspeed indicator, when there has been a failure to affect the flight control laws.
V_X	Speed for Best Angle of Climb
V_Y	Speed for Best Rate of Climb
V_αMAX	Airbus speed for the maximum angle of attack (AoA) that the pilot can achieve in normal law, shown by the top of a red strip at the bottom of the airspeed indicator.
V_αPROT	Airbus for the speed that the angle of attack (AoA) protection will become active to stop the aircraft from stalling, shown as being the top of the black and amber strip at the bottom of the airspeed indicator.

Additional Speeds

V-Speed	Term
F	Minimum speed at which the flaps may be retracted at takeoff (i.e., CONF 2/3). Also the minimum speed in approach when in CONF 2 or 3
S	Minimum speed at which the slats may be retracted at takeoff. Also the minimum speed in approach when in CONF 1.
O or GD	Green dot speed, engine-out operating speed with flaps up, best lift-to-drag ratio speed, also corresponds to final takeoff speed.

Weight

Weight	Term
AGW	Actual Gross Weight
AUW	All-Up Weight
AZFW	Actual Zero Fuel Weight
BEW	Basic Empty Weight
BOH	Brake-Off Weight
DWE	Delivery Empty Weight
DOW	Dry Operating Weight
GW	Gross Weight
LW	Landing Weight
MEW	Manufacturer's Empty Weight
MFTW	Maximum Design Fuel Transfer Weight
MFW	Maximum Design Flight Weight
MLW	Maximum Design Landing Weight
MRW	Maximum Ramp Weight
MTOGW	Maximum takeoff Gross Weight
MTOW	Maximum Design Takeoff Weight
MTW	Maximum Design Taxi Weight
MTXW	Maximum Taxi Weight
MWE	Manufacturer's Weight Empty
MZFW	Maximum Design Zero Fuel Weight
OEW	Operational Empty Weight
OLW	Operational Landing Weight
OTOW	Operational Take-Off Weight
OWE	Operating Weight Empty
RTOLW	Runway Takeoff and Landing Weight
RTOW	Runway Takeoff Weight
SBEW	Standard Basic Empty Weight
TOGW	Takeoff Gross Weight
TOW	Takeoff Weight
ZFW	Zero Fuel Weight

Abbreviations

Abbreviation	Term
A.ICE	Anti-ice, Anti-icing
A/BRK	Autobrake
A/C	Aircraft
A/COLL	Anti-Collision
A/F	Auto Flight
A/G	Air to Ground
A/L	Airline
A/S	Airspeed
A/SKID	Anti-Skid
A/STAB	Auto Stabilizer
A/THR	Autothrust
A/XFMR	Autotransformer
ABCU	Alternate Braking Control Unit
ABN	Abnormal
ABNORM	Abnormal
ABRN	Airborne
ABS	Autobrake System
ABV	Above
AC	Alternating Current
ACARS	Aircraft Communication Addressing and Reporting System
ACAS	Airborne Collision Avoidance System
ACC	Active Clearance Control
ACCEL	Acceleration/Accelerate
ACCELMTR	Accelerometer
ACCU	Accumulator
ACCUR	Accuracy
ACD	Additional Control Device
ACFT	Aircraft
ACGS	Aircraft GSM Server
ACK	Acknowledge
ACMS	Aircraft Condition Monitoring System
ACP	Audio Control Panel
ACQ	Acquire
ACQN	Acquisition
ACR	Avionics Communication Router
ACT	Active
ACT	Additional Center Tank
ACTG	Actuating
ACTIV	Active
ACTR	Actuator
ACTVN	Activation
ACTVT	Activate
ACU	Air Cooling Unit
ADB	Airport Database
ADB	Area Distribution Box
ADC	Air Data Computer
ADCN	Avionics Data Communication Network
ADD	Addition, Additional
ADF	Automatic Direction Finder
ADG	Air Driven Generator
ADI	Attitude Director Indicator
ADIRS	Air Data/Inertial Reference System
ADIRU	Air Data/Inertial Reference Unit
ADM	Air Data Module
ADR	Air Data Reference
ADS	Air Data System
ADU	Area Distribution Unit
ADV	Advisory
AESS	Aircraft Environment Surveillance System
AESU	Aircraft Environment Surveillance Unit
AEVC	Avionics Equipment Ventilation Computer
AF	Audio Frequency
AFDX	Avionics Full Duplex Switched Ethernet
AFECU	Automatic Fire Extinguishing Control Unit
AFFECTD	Affected
AFFIRM	Affirmative
AFIS	Airline In Flight Information System
AFM	Airplane Flight Manual
AFMC	Auxiliary Fuel Management Computer
AFS	Automatic Flight System
AFTR	After
AGC	Automatic Gain Control, APU Generator Contactor
AGE	Aircraft Ground Equipment
AGL	Above Ground Level
AGP	Alternate Gauging Processor
AGS	Air Generation System
AGU	Air Generation Unit
AGW	Actual Gross Weight
AI	Anti-Icing
AICU	Anti Ice Control Unit
AIDS	Aircraft Integrated Data System
AIL	Aileron
AIM	Aircraft Integrated Maintenance
AIMI	Avionics Information Management Interface
AINS	Aircraft Information Network System
AIP	Aeronautical Information Publication
AIP	Attendant Indication Panel
AIRCOND	Air Conditioning
AIS	Aeronautical Information Service
AIS	Audio Integrated System
AL	Airline
ALIGN	Alignment
ALIGND	Aligned
ALLWD	Allowed
ALPHA	Angle-of-Attack
ALPHANUM	Alphanumerical
ALS	Approach Light System
ALT	Altitude
ALT ACQ	Altitude Acquire
ALT TO	Alternate To
ALTM	Altimeter
ALTN	Alternate, Alternative
ALTU	Annunciator Light Test Unit
AM	Amplitude Modulation
AMB	Ambient
AMDB	Airport Mapping DataBase
AMM	Aircraft Maintenance Manual
AMM	Ammeter
AMP	Ampere
AMPL	Amplifier
AMU	Audio Management Unit
ANLG	Analogic
ANN	Annunciator
ANN LT	Annunciator Light
ANNCE	Announce
ANNCMT	Announcement
ANSA	At Nearest Suitable Airport
ANT	Antenna
AOA	Angle Of Attack
AOC	Air Operator's Certificate
AOC	Airline Operational Control
AOD	Audio On Demand
AOG	Aircraft On Ground
AOHX	Air/Oil Heat Exchanger
AP	Autopilot
AP/FD	Autopilot/Flight Director
APP	Approach Control-Approach Control Office
APPR	Approach
APPROX	Approximately
APU	Auxiliary Power Unit
APU AFE	APU Automatic Fire Extinguishing Control Unit
AR	As Required
ARINC	Aeronautical Radio Incorporated
ARMD	Armed
ARMG	Arming
ARND	Around
ARPT	Airport
ARR	Arrival, Arriving
ARV	Alterate Refill Valve
AS	Airspeed
ASD	Accelerate-Stop Distance
ASI	Airspeed Indicator
ASP	Audio Selector Panel
ASSY	Assembly
ASYM	Asymmetric(al)
AT	Autothrottle / Autothrust
ATA	Actual Time of Arrival
ATC	Air Traffic Control
ATCI	Air Traffic Control and Information
ATCK	Attack
ATD	Actual Time of Departure
ATE	Automatic Test Equipment
ATIS	Automatic Terminal Information Service
ATM	Air Traffic Management
ATS	Air Traffic Service
ATS	Autothrottle / Autothrust System
ATSU	Air Traffic Service Unit
ATT	Attitude
ATTND	Attendant
AUTO	Automatic
AUTOLAND	Automatic Landing
AUX	Auxiliary
AVAIL	Availability
AVAIL	Available
AVG	Average
AVIONICS	Aviation Electronics
AVNCS	Avionics
AVS	Avionics Ventilation System
AWY	Airway
AZFW	Actual Zero Fuel Weight
B	Blue
B/C	Business Class
BARO	Barometric
BAT	Battery (Electrical)
BCF	Brake Cooling Fan
BCN	Beacon
BCS	Brake Control System
BCU	Brake Control Unit
BETW	Between
BEW	Basic Empty Weight
BHD	Bulkhead
BKFLW	Backflow
BKUP	Backup
BL	Bleed
BLG	Body Landing Gear
BLK	Black
BLK	Block
BLST	Ballast
BLV	Bleed Valve
BLW	Below
BLWG	Blowing
BM	Beam
BRDG	Bridge
BRG	Bearing
BRK	Brake
BRKNG	Braking
BRKR	Breaker
BRKS	Brakes
BRKT	Bracket
BRT	Bright, Brightness
BSCS	Braking and Steering Control System
BSCU	Braking and Steering Control Unit
BT	Bus Tie
BTC	Bus Tie Contactor
BTL	Bottle
BTMS	Brake Temperature Monitoring System
BTMU	Brake Temperature Monitoring Unit
BTN	Button
BU	Battery Unit
BUS	Busbar
BYP	Bypass
C	Celsius, Centigrade
C	Cyan
C/B	Circuit Breaker
C/L	Check List
C/M	Crew Member
C/O	Change Over
C/S	Call Sign
CAB	Cabin
CAB PRESS	Cabin Pressurization
CAL	Calibration, Calibrated
CANC	Cancellation
CANCD	Cancelled
CAPT	Captain
CAS	Calibrated Air Speed
CAS	Collision Avoidance System
CAT	Category
CAUT	Caution
CAUT LT	Caution Light
CCD	Cursor Control Device
CCRM	Cabin Crew Rest Module
CCS	Cabin Communication System
CCW	Counter Clock Wise
CD	Compact Disk
CD	Control Display
CDA	Continuous Descent Arrival
CDC	Cargo Door Controller
CDL	Configuration Deviation List
CDS	Control and Display System
CDSS	Cockpit Door Surveillance System
CDSU	Cockpit Door Surveillance Unit
CDU	Control and Display Unit
CFDS	Centralized Fault Display System
CFMI	CFM International
CG	Center of Gravity
CHAS	Chassis
CHG	Change
CHK	Check
CHM	Chime
CHRO	Chronometer
CIDS	Cabin Intercommunication Data System
CK	Check
CKD	Checked
CKPT	Cockpit
CL	Check List
CL	Climb
CLB	Climb
CLD	Closed
CLG	Ceiling
CLK	Clock
CLR	Clear
CLR ALT	Clearance Altitude
CLRD	Cleared
CLRNC	Clearance
CLSD	Closed
CLSG	Closing
CM	Centimeters
CMD	Command
CMPLTD	Completed
CNCT	Connect
CNCTD	Connected
CNTOR	Contactor
CNTR	Counter
CO	Company
CO RTE	Company Route
COM	Communication
COMP	Compass
COND	Condition
COND	Conditioning
CONFIG	Configuration
CONFIRMD	Confirmed
CONSUMPT	Consumption
CONT	Continue, Continuous
COOL	Cooling
COOLG	Cooling
CORR	Correct
COUNT	Counter
CPC	Cabin Pressure Controller
CPT	Capture
CRC	Continuous Repetitive Chime
CRG	Cargo
CRK	Crank
CRS	Course
CRT	Cathode Ray Tube
CRZ	Cruise
CS	Call Switch
CSL	Console
CSTR	Constraint
CTK	Center Tank
CTL	Central
CTL	Control
CTLR	Controller
CTR	Center
CU	Control Unit
CUR	Current
CVM	Cabin Video Monitoring
CVR	Cockpit Voice Recorder
CVRS	Cockpit Voice Recorder System
CW	Clockwise
CWS	Cabin Work Station
CY	Cycle
DA	Drift Angle
DAC	Digital to Analog Converter
DADC	Digital Air Data Computer
DADS	Digital Air Data System
DAMP	Damping
DAU	Data Acquisition Unit
DB	Data Base
DB	Database
DB	Decibel
DC	Direct Current
DCD	Data Control and Display
DCDU	Datalink Control and Display Unit
DCL	Digital Cabin Logbook
DCP	Display Control Panel
DCU	Direction Control Unit
DECEL	Decelerate
DECR	Decrease
DEG	Degree
DEGRADD	Degraded
DEL	Delete
DEP	Departure
DEPRESS	Depressurization
DES	Descend
DES	Descent
DEST	Destination
DET	Detection, Detector
DETECTD	Detected
DEV	Deviation
DFDAMU	Digital Flight Data Acquisition and Management Unit
DFDAU	Digital Flight Data Acquisition Unit
DFDR	Digital Flight Data Recorder
DFDRS	Digital Flight Data Recording System
DG	Directional Gyro
DH	Decision Height
DI	Deicing
DIBU	Door Illumination Ballast Unit
DIFF	Differential
DIR	Direct, Direction, Director
DIR TO	Direct to
DISC	Disconnect, Disconnected
DISCH	Discharge, Discharged
DISCNTY	Discontinuity
DISRMD	Disarmed
DIST	Distance
DISTR	Distribute, Distribution, Distributor
DITCH	Ditching
DIVERTG	Diverting
DLCM	Data Loading Configuration Manager
DLCS	Data Loading and Configuration System
DLK	Data Link
DLOAD	Data Loading
DLY	Delay
DMA	Direct Memory Access
DMC	Display Management Computer
DMD	Demand
DME	Distance Measuring Equipment
DN	Down
DOLLI	Dome LED Light
DOW	Dry Operating Weight
DPI	Differential Pressure Indicator
DR	Door
DSPL	Display
DTG	Distance To Go
DU	Display Unit
DWG	Drawing
E	East
EBAS	Engine Bleed Air System
EC	Engine Control
ECAM	Electronic Centralized Aircraft Monitoring
ECM	Engine Condition Monitoring
ECON	Economy
ECP	ECAM Control Panel
ECS	Environmental Control System
ECU	Electronic Control Unit
EE	Electrical and Electronic
EEC	Electronic Engine Control
EFCC	Electronic Flight Control Computer
EFCS	Electrical Flight Control System
EFCU	Electrical Flight Control Unit
EFF	Effective, Effectivity
EFIS	Electronic Flight Information System
EFOB	Estimated Fuel On Board
EGT	Exhaust Gas Temperature
EIS	Electronic Instrument System
ELAC	Elevator Aileron Computer
ELAPS	Elapsed Time
ELEC	Electric, Electrical, Electricity
ELEK	Electronic
ELEV	Elevator
ELEVN	Elevation
ELS	Emergency Lighting System
ELT	Emergency Locator Transmitter
ELV	Elevation
EMER	Emergency
EMLS	Emergency Lighting System
EMU	Engine Monitoring Unit
END	Endurance
ENG	Engine
ENG OUT	Engine Out
ENT	Entry
ENTR	Entrance
ENV	Envelope
EO	Engine Out
EO ACCEL ALT	Engine Out Acceleration Altitude
EO THR RED SPD	Engine Out Thrust Reduction Speed
EOSID	Engine Out Standard Instrument Departure
EPR	Engine Pressure Ratio
EPSU	Emergency Power Supply Unit
EPU	Emergency Power Unit
EQPT	Equipment
ER	Extended Range
ERR	Error
ERS	Erase
ESC	Escape
ESD	Electronic System Display
ESS	Essential
EST	Estimated
ET	Elapsed Time
ETA	Estimated Time of Arrival
ETACS	External and Taxiing Aid Camera System
ETD	Estimated Time of Departure
ETE	Estimated Time En Route
ETO	Estimated Time Over
ETOPS	Extended Range Twin Engined Aircraft Operations
ETP	Equal Time Point
ETRAC	Electronic Thrust Reverser Actuation Controller
ETRAS	Electronic Thrust Reverser Actuation System
ETT	Estimated Time for Takeoff
EVAC	Evacuate
EVAC	Evacuation
EWD	Engine/Warning Display
EWS	Electronic Warning System
EX	Example
EXCESS	Excessive
EXT	Extend, Extension
EXT	Exterior
EXTING	Extinguishing
EXTN	Extension
Exting	Extinguish
F	Fahrenheit
F	Fuel
F	Minimum Flap Retract Speed (EFIS)
F-G/S	FLS Glide Slope
F-LOC	FLS Localizer
F-PLN	Flight Plan
F/C	First Class
F/CTL	Flight Controls
F/O	First Officer
F/S	Fast/Slow
F/W	Failure Warning
FAA	Federal Aviation Administration
FAC	Flight Augmentation Computer
FACS	Flight Augmentation Computer System
FADEC	Full Authority Digital Engine Control
FAF	Final Approach Fix
FAIL	Failed, Failure
FAIR	Fairing
FAP	Flight Attendant Panel
FAS	Flight Augmentation System
FAWP	Final Approach Waypoint
FBW	Fly-by-wire
FC	Fully Closed
FCC	Flight Control Computer
FCCS	Flight Control Computer System
FCCU	Flight Control Computer Unit
FCGU	Flight Control and Guidance Unit
FCMC	Fuel Control and Monitoring Computer
FCMS	Fuel Control Monitoring System
FCOM	Flight Crew Operating Manual
FCPC	Flight Control Primary Computer
FCPI	Flight Control Position Indicator
FCST	Forecast
FCTN	Function
FCU	Flight Control Unit
FD	Flight Director
FDP	Final Descent Point
FDR	Flight Data Recorder
FDU	Fire Detection Unit
FE	Flight Envelope
FEC	Flight Envelope Computer
FEDR	Feeder
FES	Fire Extinguishing System
FF	Fuel Flow
FG	Flight Guidance
FGES	Flight Guidance and Envelope System
FGS	Flight Guidance System
FH	Flight Hours
FIX	Fixed
FL	Flight Level
FLD	Factored Landing Distance
FLDK	Flight Deck
FLEX	Flexible
FLP	Flap
FLS	FMS Landing System
FLT	Flight
FLT CTL	Flight Control
FLTR	Filter
FM	Flight Management
FMA	Flight Mode Annunciator
FMC	Flight Management Computer
FMCS	Flight Management Computer System (FMC and CDU)
FMCU	Flight Management Computer Unit
FMGC	Flight Management and Guidance Computer
FMGEC	Flight Management Guidance and Envelope Computer
FMGES	Flight Management Guidance and Envelope System
FMGS	Flight Management and Guidance System
FMS	Flight Management System (FMCS and AFS sensors)
FNA	Final Approach
FNCP	Flight Navigation Control Panel
FNSG	Flight Navigation Symbol Generator
FO	Fully Open
FOB	Fuel On Board
FOD	Foreign Object Damage
FPA	Flight Path Angle
FPL	Flight Plan
FPM	Feet per Minute
FPS	Fire Protection System
FPT	Flight Plan Target
FPV	Flight Path Vector
FQ	Fuel Quantity
FR	Frame
FREQ	Frequency
FTK	Fuel Tank
FU	Fuel Used
FUSLG	Fuselage
FWC	Flight Warning Computer
FWD	Forward
FWS	Flight Warning System
FWSD	Flight Warning and System Display
G	Galley
G	Green
G/S	Glide Slope
GA	Go-Around
GDNC	Guidance
GEN	Generator
GLS	GNSS Landing System
GMT	Greenwich Mean Time
GND	Ground
GNSS	Global Navigation Satellite System
GP	Glide Path
GPCU	Ground Power Control Unit
GPS	Global Positioning System
GPU	Ground Power Unit
GPWC	Ground Proximity Warning Computer
GPWS	Ground Proximity Warning System
GR	Gear
GRVTY	Gravity
GS	Ground Speed
GSHLD	Glareshield
GW	Gross Weight
GYRO	Gyroscope
H	Hot (Electrical Point)
H NAV	Horizontal Navigation
HA	Holding Pattern to an Altitude Termination
HARN	Harness
HCU	Hydraulic Control Unit
HDG	Heading
HDG/S	Heading Selected
HDL	Handle
HEATG	Heating
HF	High Frequency
HF	Holding Pattern to a Fixed Waypoint
HI	High
HLD	Hold
HOLD	Holding
HP	High Pressure
HPA	High Power Amplifier
HR	Hour
HRS	Hours
HSI	Horizontal Situation Indicator
HTG	Heating
HUD	Head Up Display
HV	High Voltage
HYD	Hydraulic
HZ	Hertz
Hpa	Hecto Pascal
I/P	Intercept Point
IAF	Initial Approach Fix
IAS	Indicated Airspeed
ICAO	International Civil Aviation Organisation
IDENT	Identification, Identifier, Identify
IF	Initial Fix
IFE	In-FLight Entertainment
IFR	Instrument Flight Rules
IGN	Ignition
ILS	Instrument Landing System (LOC and G/S)
IM	Inner Marker
IMM	Immediate
IMU	Inertial Measurement Unit
IN	Inch
IN HG	Inches of Mercury
INA	Initial Approach
INB	Inbound
INBD	Inboard
INCR	Increase
INCR	Increment
IND	Indicator
INFO	Information
INHI	Inhibit
INHIB	Inhibit, Inhibited, Inhibition
INIT	Initial(ization)
INOP	Inoperative
INR	Inner
INS	Inertial Navigation System
INST	Instrument
INT	Interior
INTCP	Intercept
INTERCOM	Intercommunication
INTL	Internal
INV	Inverter
IPDU	Ice Protection Data Unit
IR	Inertial Reference
IRS	Inertial Reference System
IRU	Inertial Reference Unit
ISA	Inertial Sensor Assembly
ISO	International Standardization Organisation
ISOL	Isolation
IV	Isolation Valve
JAM	Jammed, Jamming
JEP	Jeppesen
KBD	Keyboard
KCAS	Knot Calibrated Air Speed
KCCU	Keyboard and Cursor Control Unit
KEAS	Knots Equivalent Air Speed
KHZ	Kilohertz
KIAS	Knots Indicated Airspeed
KT	Knot(s)
KTAS	Knot True Air Speed
KU	Keyboard Unit
KV	Kilo Volt
KVA	Kilovolt Ampere
L	Left
L	Length
L	Litre or Liter
L ECAM DU	Left ECAM Display Unit
L/D	Lift/Drag
L/G	Landing Gear
LAND	Landing
LAT	Lateral
LAT	Latitude
LAV	Lavatory
LB	Pounds
LB-FT	Pound - Force - Foot (Torque)
LB-IN	Pound - Inch
LCD	Liquid Crystal Display
LCH	Latch
LCTR	Locator
LD	Load
LD	Lower Deck
LD	Landing Distance
LDA	Landing Distance Available
LDG	Landing
LDG GR	Landing Gear
LED	Light Emitting Diode
LGERS	Landing Gear Extension and Retraction System
LGMS	Landing Gear Management System
LH	Left Hand
LIM	Limit, Limitation, Limiting, Limiter
LIQD	Liquid
LKD	Locked
LL	Latitude/Longitude
LO	Low
LO PR	Low Pressure
LOC	Localizer
LP	Low Pressure
LP VALVE	Low Pressure Valve
LS	Landing System
LT	Light
LTD	Limited
LTG	Lighting
LTS	Lights
LVL	Level
LVL/CH	Level Change
LVR	Lever
LW	Landing Weight
LWR	Lower
M	Mach
M	Mach Number
M	Magenta
M	Maneuvering Speed (EFIS)
M	Mode
MA	Milli-Ampere
MAG	Magnetic
MAINT	Maintenance
MAN	Manual
MAX	Maximum
MAX CLB	Maximum Climb
MAX DES	Maximum Descent
MB	Millibars
MCDU	Multipurpose Control & Display Unit
MCT	Maximum Continuous Thrust
MCU	Master Control Unit
MDA	Minimum Decision Altitude
MDA	Minimum Descent Altitude
MDH	Minimum Descent Height
MEA	Minimum En Route IFR Altitude
MED	Medium
MEM	Memory
MEW	Manufacturer's Empty Weight
MFD	Multifunction Display
MGT	Management
MIC	Microphone
MID	Middle
MIN	Minimum
MIN FUEL	Minimum Fuel
MIN TIME	Minimum Time
MISC	Miscellaneous
MLG	Main Landing Gear
MM	Middle Marker
MMEL	Master Minimum Equipment List
MMO	Mach Max Operating Speed
MMO	Maximum Operating Mach
MON	Monitor, Monitoring, Monitored
MRW	Maximum Ramp Weight
MSA	Minimum Safe Altitude
MSG	Message
MSL	Mean Sea Level
MSTR	Master
MTO	Maximum Take-Off
MTOGW	Maximum Takeoff Gross Weight
MTOW	Maximum Design Takeoff Weight
MTR	Meter
MWARN	Master Warning
MWC	Master Warning Computer
MWP	Master Warning Panel
MWS	Master Warning System
MZFCG	Maximum Zero Fuel Center of Gravity
MZFW	Maximum Design Zero Fuel Weight
Mn	Mach Number
N	Newton
N	Normal
N	North
N/A	Not Applicable
N/P	Next Page
N/W	Nose Wheel
N/WS	Nose Wheel Steering
N1	Engine Fan Speed
N1	Low Pressure Rotor Speed
N1.D	N1 Descent
N1.L	N1 Latch
N2	High Pressure Rotor Speed
NAV	Navigation
NAVAID	Navigation Aid
ND	Navigation Display
NDB	Navigation Data Base
NDB	Non-Directional Beacon
NDB	Non-Directional Radio Beacon
NEG	Negative
NLG	Nose Landing Gear
NM	Nautical Mile
NO	Normal Operation
NORM	Normal
NOTAM	Notice to Airmen
NS	No Smoking
NW	Nose Wheel
Nm	Moment (Newtonmeter)
No	Number
O	Open
O/P	Output
O2	Oxygen (Symbol)
OANC	Onboard Airport Navigation Computer
OANS	Onboard Airport Navigation System
OAT	Outside Air Temperature
OBSV	Observation
OCL	Obstacle Clearance Limit
OEW	Operational Empty Weight
OFFR	Off/Reset
OFST	Offset
OIS	Onboard Information System
OIT	Onboard Information Terminal
OK	Correct
OLW	Operational Landing Weight
OM	Outer Marker
OMS	Onboard Maintenance System
OMT	Onboard Maintenance Terminal
OP	Operational
OPP	Opposite
OPS	Operations
OPT	Optimum
OPT	Optional
OPTL	Optional
OPU	Overspeed Protection Unit
OTOW	Operational Take-Off Weight
OUT	Outlet
OUT	Output
OUTR	Outer
OVBD	Overboard
OVFL	Overflow
OVHD	Overhead
OVHT	Overheat
OVLD	Overload
OVPRESS	Overpressure
OVRD	Override
OVSP	Overspeed
OVSTEER	Oversteer
OVV	Overvoltage
OWE	Operating Weight Empty
OXY	Oxygen
OZ	Ounce
P	Pressure
P/B	Pushbutton
P/BSW	Pushbutton Switch
P/L	Payload
PA	Passenger Address
PA	Public Address
PARK	Parking
PAS	Pitch Attitude Sensor
PAX	Passenger
PC	Pack Controller
PCT	Percent
PCU	Power Control Unit
PED	Pedestal
PERF	Performance
PF	Pilot Flying
PFD	Primary Flight Display
PG	Page
PHR	Pounds per Hour
PIREP	Pilot Report
PLT	Pilot
PMP	Pump
PMU	Power Management Unit
PNEU	Pneumatic
PNF	Pilot Non Flying
PNL	Panel
POS	Position
PPM	Parts per Million
PPOS	Present Position
PR	Pressure
PRB	Probe
PRESEL	Preselection, Preselector
PRESS	Pressure, Pressurization, Pressurize
PREV	Previous
PRGM	Program
PRI	Priority
PROC	Procedure
PROG	Progress
PROT	Protection
PROX	Proximity
PSU	Power Supply Unit
PT	Point
PTR	Push to Reset
PTT	Push to Test
PTT	Push-to-Talk
PTU	Power Transfer Unit
PURS	Purser
PW	Pratt and Whitney
PWR	Power
PWS	Predictive WindShear
Pa	Pascal
Pb	Pressure Ambient
Q	Pitch Rate
QAR	Quick Access Recorder
QFE	Baro Pressure Setting for Airfield Altitude
QFE	Field Elevation Atmospheric Pressure
QFE	Pressure Setting for Airfield Altitude
QNE	Sea Level Standard Atmosphere Pressure
QNH	Baro Pressure Setting for en Route Altitude
QNH	Pressure Setting for En Route Altitude
QNH	Sea Level Atmospheric Pressure
QNH	Sea Level Pressure
QRH	Quick Reference Handbook
QTY	Quantity
R	Radius
R	Red
R	Release
R	Reset
R	Right
R/C	Rate of Climb
R/D	Rate of Descent
R/H	Radar Height
R/I	Radio/Inertial
R/L	Reading Light
R/T	Radio Transmit
R/T	Receiver Transmitter Unit
RA	Radio Altimeter, Radio Altitude
RA	Resolution Advisory
RAAS	Runway Awareness and Advisory System
RAD	Radio
RAI	Ram Air Inlet
RAIMS	Radio and Audio Integrating Management System
RAT	Ram Air Turbine
RC	Repetitive Chime
RCDR	Recorder
RCL	Recall
RCLM	Runway Center Line Marking
RCLS	Runway Center Line Light System
RCR	Runway Condition Report
RCVR	Receiver
RCVY	Recovery
RDY	Ready
RECOG	Recognition
RED	Reduction
REDUND	Redundancy
REF	Reference
REF ALIGN	Reference Alignment
REFLNG	Refueling
REFUEL	Refueling
RET	Retract
RET	Return
RETR	Retract
REV	Reverse
REV	Revise, Revision
RF	Radio Frequency
RLD	Required Landing Distance
RMP	Radio Management Panel
RMU	Radio Management Unit
RNAV	Area Navigation
RNG	Range
RNI	Radio Navigation Indicator
RPLNT	Repellent
RPM	Revolutions Per Minute
RPTG	Reporting
RQRD	Required
RR	Rolls Royce
RST	Reset
RSV	Reserve
RSVR	Reservoir
RTE	Route
RTG	Rating
RTN	Return
RTO	Rejected TakeOff
RTOLW	Runway Takeoff and Landing Weight
RTOW	Runway Takeoff Weight
RTR	Router
RTRSW	Rotary Switch
RTRY	Rotary
RTU	Radar Transceiver Unit
RUD	Rudder
RVR	Runway Visual Range
RVS	Reverse
RVSN	Reversion
RWY	Runway
S	Minimum Slat Retract Speed (EFIS)
S	South
S/C S/D	Step Climb Step Descent
S/W	Software
SAT	Static Air Temperature
SATCOM	Satellite Communication
SBL	Symbol
SC	Single Chime
SD	System Display
SDAC	System Daa Analog Converter
SDCU	Smoke Detection Control Unit
SEAL	Sealing
SEC	Secondary
SEC	Secondary Computer
SEC	Spoiler Elevator Computer
SEG	Segment
SEL	Select, Selected, Selector, Selection
SELCAL	Selective Calling System
SEQ	Sequence, Sequential
SER	Serial
SER	Serial Number
SGU	Symbol Generator Unit
SHT	Short
SI	Slip Indicator
SID	Standard Instrument Departure
SIG	Signal
SIM	Simulation
SL	Sea Level
SLD	Slide, Sliding
SLT	Slat
SMK	Smoke
SN	Serial Number
SNSR	Sensor
SPAD	Scratchpad
SPD	Speed
SPD/M	Speed-Mach
SPEC	Specification
SPKR	Speaker
SPLR	Spoiler
SPLY	Supply
SQ	Squelch
SRS	Speed Reference System
STAB	Stabilizer
STAR	Standard Terminal Arrival Route
STARTG	Starting
STAT	Static
STBY	Standby
STDY	Steady
STRG	Steering
STRUCT	Structure
STS	Status
SUCT	Suction
SURF	Surface
SVCE	Service
SW	Switch
SWTG	Switching
SYNC	Synchro, Synchronise
SYS	System
T	Time
T	Trim
T	True
T	Turn
T/C	Top of Climb
T/D	Top of Descent
T/R	Thrust Reverser
T2CAS	Traffic and Terrain Collision Avoidance System
TA	Traffic Advisory
TAC	Taxiing Aid Camera
TACAN	Ultra-high Frequency Tactical Air Navigation Aid
TACH	Tachometer
TADB	Terrain/Airport DataBase
TAS	True Airspeed
TAT	Total Air Temperature
TAWS	Terrain Avoidance Warning System
TBC	To Be Confirmed
TBU	Time Base Unit
TBV	Transient Bleed Valve
TC	Takeoff Charts
TCAS	Traffic Alert and Collision Avoidance System
TEMP	Temperature
TGT	Target
THR	Thrust
THROT	Throttle
THS	Trimmable Horizontal Stabilizer
TK	Ground Track Angle
TK	Tank
TKE	Track Angle Error
TLA	Throttle Lever Angle
TMA	Terminal Control Area
TMG	Timing
TMR	Timer
TO	Takeoff
TO/APPR	Takeoff/Approach
TOD	Takeoff Distance
TODA	Takeoff Distance Available
TOGA	Takeoff/Go Around
TOGW	Takeoff Gross Weight
TOR	Takeoff Run
TORA	Takeoff Run Available
TOT	Total
TOW	Takeoff Weight
TOW	Towing
TR	Thrust Reverser
TRANS	Transition
TRANSF	Transfer
TRC	Thrust Rating Computer
TRGT	Target
TRIG	Trigger
TRK	Track
TRK	Track (angle)
TROPO	Tropopause
TRT	Turn Round Time
TRU	True
TST	Test
TT	Total Time
TURB	Turbine
TWR	Tower
TWY	Taxiway
TX	Transmission (TCAS to Transponder)
TYP	Typical
UD	Upper Deck
UHF	Ultra High Frequency
UTC	Universal Time Coordinated
V	Valve
V	Volt, Voltage
V/L	VOR/LOC
V/L	VOR/Localizer
V/S	Vertical Speed
VACU	Vacuum
VAR	Variable, Variation
VCTREND	Airspeed Tendency
VDF	Very High Frequency Direction Finding Station
VDR	VHF Data Radio
VEL	Velocity
VERT	Vertical
VFR	Visual Flight Rules
VHF	Very High Frequency
VHV	Very High Voltage
VIB	Vibration
VLF	Very Low Frequency
VMO	Maximum Operating Speed
VOL	Volume
VOR	Very High Frequency Omnirange Station
VOR.D	VOR-DME
VORTAC	Visual Omni-Range Tactical Air Navigation
VSI	Vertical Speed Indicator
VSW	Stall Warning Speed
W	Watt
W	Weight
W	West
W/V	Wind Direction and Speed
WAI	Wing Anti-Ice
WARN	Warning
WB	Wide Body
WD	Warning Display
WDO	Window
WG	Wing
WHL	Wheel
WR	Weather Radar
WS	Wind Speed
WT	Weight
WX	Weather Mode (ND)
WXR	Weather Radar
X	Cross
X	Trans Crossbleed
X BLEED X FEED	Crossfeed
X LINE	Crossline
X VALVE	Cross Valve
X-TALK	Cross-talk
XCHECK	Crosscheck
XFR	Transfer
XING	Crossing
XPDR	Transponder
XPNDR	Transponder
XWIND	Crosswind
Y	Yellow
Y/C	Economy Class
YCR	Economy Class-Rear
YE	Year
Z	Greenwich Mean Time
ZC	Zone Controller
ZFCG	Zero Fuel Center of Gravity
ZFW	Zero Fuel Weight
Zp	Pressure Altitude
Zpi	Indicated Pressure Altitude
dB	Decibel
dB(A)	A-Weighted Decibel
ft	Feet, Foot
ft/mn	Feet per Minute
g	Gram
h	Height
h	Hour
in	Inch
kPa	Kilo Pascal
kW	Kilowatt
kg	Kilogram
kg/m³	Kilograms/Cubic Meter
lb	Pound
lbf/in²	Pounds force per square inch
m	Meter
mbar	Millibar
mile/h	Miles per Hour
min	Minute
ml	Milliliter
mm	Millimeter
n	Load Factor
phi	Bank Angle
phi N	Nominal Bank Angle
r/min	Revolutions per Minute
s	Second
t	Tonne

Last update: February 19, 2023