HF High Frequency
HKCAD Hong Kong Civil Aviation Department
HPC High Pressure Compressor
HUD Head Up Display

IAC Instrução de Aviação Civil (Civil Aviation Instruction)
IAC AR Interstate Aviation Committee Aviation Register
IAS Indicated Airspeed
ICAO International Civil Aviation Organization
IDG Integrated Drive Generator
IFR Instrument Flight Rules
IGN Ignition
IL Information Leaflet
ILS Instrument Landing System
IR Inertial Reference
IRS Inertial Reference System
ISA International Standard Atmosphere
ISIS Integrated Standby Instrument System
ISPSS In-Seat Power Supply System

JAA Joint Aviation Authorities
JAR Joint Aviation Regulation
JCAB Japan Civil Aviation Bureau

KOZ Keep Out Zone

L/G Landing Gear
LD Landing Distance
LDA Localizer Directional Aid Landing Distances Available
LDG Landing
LEDU List of Effective Documentary Unit
LETR List of Effective Temporary Revision
LGCIU Landing Gear Control and Interface Unit
LH Left Hand
LIP Lift Improvement Package
LNAV Lateral Navigation
LOC Localizer

LOC-BC Localizer Back Course
LPV Localizer Performance with Vertical Guidance
LRBL Least Risk Bomb Location
LS Landing System

MAC Mean Aerodynamic Chord
MAP Missed Approach Point
MAPSC Maximum Approved Passenger Seating Configuration
MCDL Master Configuration Deviation List
MCDU Multipurpose Control & Display Unit
MCPSC Maximum Certificated Passenger Seating Capacity
MCT Maximum Continuous Thrust
MDA Minimum Descent Altitude
MDH Minimum Descent Height
MEA Minimum En route Altitude
MLE Maximum Landing Gear Extended Mach
MLS Microwave Landing Distance
MLW Maximum Landing Weight
MMEL Master Minimum Equipment List
MMO Maximum Operating Mach
MMR Multi-Mode Receiver
MOPS Minimum Operational Performance Standards
MORA Minimum Off Route Altitude
MSN Manufacturer Serial Number
MTOW Maximum Takeoff Weight
MZFW Maximum Zero Fuel Weight

N1 Low Pressure Rotor Speed
N2 High Pressure Rotor Speed
NAI Nose Air Intake
NDB Non-Directional Beacon
NAV Navigation
ND Navigation Display
NPA Non Precision Approach
NSA Norme Sud Aviation

OANS On-board Airport Navigation System
OAT Outside Air Temperature
OCL Oceanic Clearance
OEI One Engine Inoperative
OEW Operational Empty Weight
OLB Ops Library Browser
OLD Operational Landing Distance
OVHT Overheat
OW Operational Weight

P/B Pushbutton
PAPI Precision Approach Path Indicator
PAR Precision Approach Radar
PC Personal Computer
PED Portable Electronic Devices