A&P—Airframe
& Power plant
AAS—Airport Advisory Service
ACAS—Airborne Collision Avoidance System
AD—Airworthiness Directive
ADI—Altitude Deviation Indicator
ADF—Automatic Direction Finder
AGL—Above Ground Level
AHRS—Altitude Heading Reference System
AOG—Aircraft on Ground
APU—Auxiliary Power Unit
ARSA—Airport Radar Service Area
ASL—Above Sea Level
ASOS—Automated Surface Observing System
ASR—Airport Surveillance Radar
ATC—Air Traffic Control
AWOS—Automated Weather Observation System
BCAS—Beacon
Collision Avoidance System
BCM—Back Course Marker
BFR—Biennial Flight Review
BOW—Basic Operating Weight
C—Centigrade
(C° x 1.8 + 32=F°)
CAS—Calibrated Airspeed
CAT—Clear Air Turbulence
CAVU—Ceiling And Visibility Unlimited
CDI—Course Deviation Indicator
CDU—Control Display Unit
CFR—Crash, Fire and Rescue
CG--Center of Gravity
CPT—Cockpit Procedures Trainer
dB—decibel
DER—Designated Engineering Representative
DF—Direction Finder
DFC—Digital Flight Control
DG—Directional Gyro
DME—Distance Measuring Equipment
EDS—Electronic
Display System
EFIS—Electronic Flight Instrument System
EGPWS—Enhanced Ground Proximity Warning
System
ELT—Emergency Locator Transmitter
EOW—Empty Operating Weight
ETA—Estimated Time of Arrival
ETA—Estimated Time of Arrival
EVS—Enhanced Vision System
F.—Fahrenheit
(to convert to C, multiply (F° -32 x 0.555=C°)
FADEC—Full-Authority Digital Engine Control
FAR—Federal Air Regulation
FBO—Fixed Base Operator
FD—Flight Director
FF—Fuel Flow
FL—Flight Level
FLIR—Forward-Looking Infrared
FMS—Flight Management System
GCA—Ground
Controlled Approach
GMT—Greenwich Mean Time
GNS—Global Navigation System
GPS—Global Positioning System
GS—Glide Slope
HIRL—High-Intensity
Runway Lights
HOTAS—Hands On Throttle And Stick
HSI—Horizontal Situation Indicator
IA—Inspection
Authorization
IAS—Indicated Airspeed
IFR—Instrument Flight Rules
ILS—Instrument Landing System
IMC—Instrument Meteorological Conditions
INS—Inertial Navigation System
KCAS—knots
calibrated airspeed
KIAS—knots indicated airspeed
kt—knot, or nautical mile (1.15 statute
mi.)
ktas—knots true airspeed
LCD—Liquid
Crystal Display
MCP—Maximum
Continuous Power
MEA—Minimum Enroute Altitude
MEL—Minimum Equipment List
MM—Middle Marker
Mmo—maximum Mach operating speed
MSL—Mean Sea Level
NDB—Non-Directional
Beacon
NDH—No Damage History
NDT—Non-Destructive Testing
Nm—nautical mile (see knot)
Notam—Notice to Airmen
NPRM—Notice of Proposed Rulemaking
NTSB—National Transportation Safety Board
OM—Outer
Marker
PAPI—Precision
Approach Path Indicator
Pirep—pilot report
PLASI—Pulse Light Approach Slope Indicator
PMA—Parts Manufacturer Approval
Rnav—Area
navigation
sfc—specific
fuel consumption
SFRM—Since Factory Remanufacture
shp—shaft horsepower
SID—Standard Instrument Departure
SIDs—Supplemental (or Standard) Inspection
Documents
sm—statute mile
SMOH—Since Major Overhaul
SR—Specific Range
STC—Supplemental Type Certificate
STOL—Short Takeoff and Landing
Tacan—Tactical
air navigation
TAF—Terminal Area Forecast
TAS—True Airspeed
TBO—Time Between Overhaul
TC—Type Certificate
TCAS—Traffic alert Collision Avoidance System
TDWR—Terminal Doppler Weather Radar
TIA—Type-Inspection Authorization
TRSA—Terminal Radar Service Area
TSO—Technical Standard Order
UTC—coordinated
universal time
Va—maneuvering
speed
VASI—Visual Approach Slope Indicator
Vfe—flap extension speed
VFR—Visual Flight Rules
Vle—maximum Landing gear Extension speed
Vlo—maximum Landing gear Operating speed
Vmc—minimum controllable speed
VMC—Visual Meteorological Conditions
Vmo—maximum operating indicated airspeed
Vne—never-exceed speed
Vno—maximum structural cruising speed
VOR—Very high frequency Omnidirectional
Rangefinder
Vs—stall speed
VSI—Vertical Speed Indicator
VTOL—Vertical Takeoff and Landing
Vx—best angle of climb speed
Vy—best rate of climb speed
Zulu
time—Greenwich Mean Time, same as UTC
