CAA - Common Aviation Abbreviations
AC Aircraft
A/C Air-Conditioning
AD's Airworthiness Directives (Maintenance or Modification ordered by FAA)
ADF Automatic Direction Finder
AFIS Airborne Flight Information System
AFTT Airframe Total Time
AH Artificial Horizon
Annual - Mandatory inspection of airframe and power plant
A&P Airframe & Powerplant
AI Attitude Indicator
AP Audio Panel
AP Autopilot
AP/FD Autopilot/Flight Director
ATC Air Traffic Control
Aux Fuel Auxiliary Fuel Tanks
Boots Inflatable device used to remove ice of wings and tail
CAMP Computerized Aircraft Maintenance Program
CDI Course Deviation Indicator
CHT Cylinder Head Temperature
Com Communications
Conventional Gear -Two main wheels with one tail wheel
C/R Counter Rotating propellers
Cycles - Turbine engine cycle [start up - continues w. full-power - ends with shutdown]
CT Carburetor Temperature
DF Direction Finder
DFDR Digital Flight Data Recorder
DG Directional Gyro
DME Distance Measuring Equipment
De-ice Complete de-ice equipment
DEU Defective Unit
EFIS Electronic Flight Instrument System
EGT Exhaust Gas Temperature
ELT Emergency Locator Transmitter
ENC Encoder
FAA Federal Aviation Administration
F/D Flight Director
FGP Full Gyro Panel
FWF Firewall Forward
Full De-Ice - Complete de-ice/anti-ice equipment installed on wings, tail, props, and windshield
Full Panel All gyros necessary for instrument flight
FWF Firewall Forward [referencing reg overhaul]
GNS Global Navigation System
GPS Global Positioning System
GPWS Ground Proximity Warning System
G/S Glide Slope
GSP Ground Service Plug
HC Heavy Case
HF High Frequency
Hot Prop - De-ice equipped propeller
HP Heated Pilot
hp Horsepower
HSI Horizontal Situation Indicator
HSI Hot Section Inspection
ICAO International Civil Aviation Organization
IFR Instrument Flight Rules Rating
ILS Instrument Landing System
IRAN Inspect Repair As Necessary
ITC Investment Tax Credit
K-Ice - FAA certified for flight into icing conditions
Known Ice, Known Icing - FAA certified for flight into icing conditions
LE Left Engine
LMB Light Marker Beacon
LOC Localizer Receiver and Indicator
LR Long Range -Fuel-
LRT Long Range Tanks
MB Marker Beacon
MDH Major Damage History
Mid-Time - The middle third of engines recommended TBO
MP Manifold Pressure
MSP Maintenance Service Plan
NDH No Damage History
NM Nautical Miles
Nav Navigation Radio Receiver
Nav/Com Navigation & Communication Radios
NDH No Damage History
OAT Outside Air Temperature
OH Overhaul
OXY Oxygen system for crew & passengers
PET Piper Electric Trim
PC Positive Control
PBH Power by the hour, a maintenance program
P&I Paint and Interior
PMA Parts Manufacturer Approval
P.O.R. Price On Request
RB Rotating Beacon
RC Rate of Climb
RDF Radio Direction Finder
RDR/Radar On board weather radar system
RE Right Engine
RG Retractable (landing) Gear
RMI Radio Magnetic Indicator
RNAV Area Navigation
SB's Service Bulletins
SCMOH Since Chrome Major Overhaul - Remanufacture
SCORE Since Core Inspection - turbine engin ref
SFRM Since Factory Remanufactured - engine ref
SFRMN Since Factory Remanufactured - engine ref
SHOT Since Hot Section Inspection turbine engine ref
SHP Shaft Horsepower turbine engine ref
SHSI Since Hot Section Inspection turbine engine ref
SHS Since Hot Section
Slaved Compass - North seeking gyro stabilized compass system
SMPI Since Major Periodic Inspection turbine engine ref
SMOH Since Major Overhaul - engine time ref
S/N Serial Number
SOH Since Overhaul
SPOH Since Prop Overhaul
STC Supplemental Type Certificate
STOH Since Top Overhaul
STOL Short Take-Off
STOP Since Top Overhaul - engine ref
TBO Time Between Overhaul
TLMB or 3LMB Three Light Marker Beacon
Tri Gear Tricycle landing gear w. nose wheel
TRs Thrust Reversers
TT Total Time
TTAE Total Time Aircraft & Engine
TTSN Total Time Since New
Turboprop Turbine engine powered propeller aircraft
UHF Ultra High Frequency
VFR Visual Flight Rules
VHF Very High Frequency
VLF Very Low Frequency
VOR Visual Omni Range - VHF navi radio
Wet Wings - A method for containing fuel without using rubber fuel cells
XPDR/TXP Transponder
