AD

Airworthiness Directive

ADF

Automatic Direction Finder

AD’S

Airworthiness Directives

AFIS

Airborne Flight Information System

AFTT

Airframe Total Time

AH

Artificial Horizon

AI

Attitude Indicator

ALC

Alcohol

ANNUAL

Yearly Mandatory Inspection

AP

Audio Panel

AP

Auto Pilot

ASI

Airspeed Indicator

AUX FUEL

Auxiliary Fuel Tanks

BOOTS

Inflatable Leading Edge De-Ice Devices

CAMP

Computerized Aircraft Maint. Program

C/R

Counter Rotating

CDI 

Course Deviation Indicator

CHT

Cylinder Head Temperature

COM

Communications Radio

COMM

Communications Radio

CONT

Continental Engine

C/R

Counter-Rotating Propellers

CT

Carburetor Temperature

DF

Direction Finder

DG

Directional Gyro

DH

Damage History

DME 

Distance Measuring Equipment

EFIS 

Electronic Flight Instrument System

EGT

Exhaust Gas Temperature

ELT

Emergency Locator Transmitter

ENC. ALT.

Encoding Altimeter

F/D

Flight Director

FBO

Fixed Base Operation

FGP

Full Gyro Panel

FREM

Factory Remanufacture

FREMAN

Factory Remanufacture

FWF

Firewall Forward

G/S

Glide Slope

GNS

Global Navigation System

GPH

Gallons Per Hour

GPS

Global Positioning System

GR

Glide Ratio

GS

Glidescope

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

IFR

Instrument Flight Rating

IFR

Instrument Flight Rules

ILS

Instrument Landing System

IRAN

Inspect Repair As Necessary

ITC

Investment Tax Credit

K-ICE

Certified for known icing conditions

LE

Left Engine

LMB

Light Marker Beacon

LOC

Localizer

LORAN

Long Range Navigation

LR

Long Range

LR FUEL

Long Range Fuel

LRT

Long Range Tanks

LYC

Lycoming Engine

MB

Marker Beacon

MDH

Major Damage History

MID-TIME

Mid 1/3 of Engine’s Recommended TBO

MK

Mark (model of equipment)

MLS

Microwave Landing System

MP 

Manifold Pressure

MPH

Miles Per Hour

MSP

Maintenance Service Plan

NAV

Navigation Radio Receiver

NAV

Navigation

NAV/COM

Navigation / Communications Radios

NDH

No Damage History

NM

Nautical Miles

O/OXY

Oxygen

OAT

Outside Air Temperature

OBO

Or Best Offer

OH

Overhaul

P&I

Paint and Interior

P&W

Pratt & Whitney Engine

PBH

Power By The Hour (Maintenance Program)

PC

Positive Control

PET

Piper Electric Trim

PMA

Parts Manufacturer Approval

POR

Price On Request

RB

Rotating Beacon

RC

Rate of Climb

RDF

Radio Direction Finder

RDR

On-Board Weather Radar

RE

Right Engine

RG

Retractable Gear

RMI

Radio Magnetic Indicator

RNAV

Radio Navigation

S/N

Serial Number

SB’S

Service Bulletins

SCMOH

Since Chrome Remanufacture

SCMOH

Since Chrome Major Overhaul

SCORE

Since Core Inspection

SCTOH

Since Chrome Top Overhaul

SFRM

Since Factory Remanufacture

SFRMN

Since Factory Remanufacture

SFREMAN

Since Factory Remanufacture

SHOT

Since Hot Section Inspection

SHP

Shaft Horsepower

SHS/SHSI

Since Hot Section Inspection

SMOH

Since Major Overhaul

SMPI

Since Major Periodic Inspection

S/N

Serial Number

SOH

Since Overhaul

SPOH

Since Prop Overhaul

STC

Supplemental Type Certificate

STOH

Since Top Overhaul

STOL

Short Take Off And Landing

STOP

Since Top Overhaul

T&B

Turn and Bank

TBI

Turn and Bank Indicator

TBO

Time Between Overhaul

TCAS

Traffic Alert and Collision System

Tri Gear

Tricycle Gear with Nose Wheel

TR’s

Thrust Reversers

TSOH

Time Since Overhaul

TT

Total Time

TTA

Total Time Aircraft Frame

TTAE

Total Time Aircraft & Engine

TTAF

Total Time Aircraft Frame

TTE

Total Time Aircraft Engine

TTLE

Total Time Left Engine

TTLP

Total Time Left Prop

TTRE

Total Time Right Engine

TTRP

Total Time Right Prop

TTSN

Total Time Since New

Turboprop

Turbine Engine Driven Prop Aircraft

TXP

Transponder

UHF

Ultra High Frequency

VFR

Visual Flight Rules

VHF

Very High Frequency

VLF

Very Low Frequency

VOR

Vhf Omni Range

Wet Wings

Fuel in wings w/o rubber fuel cells

XPDR

Transponder