M Mach Number
M Manual Tuned
NAVAID
MAA Maximum
Authorized IFR Altitude
MAG Magnetic
MAINT Maintenance
MAN Manual
MAP Missed
Approach
MAR March
M/ASI Mach/Airspeed
Indicator
MAX Maximum
MAX CLB
Maximum engine thrust for two-engine climb
MAX CRZ
Maximum engine thrust for two-engine cruise
MCA Minimum
Crossing Altitude
MCDU Multipurpose
Control Display Unit
MCP Mode Control
Panel (pilots' interface to the autoflight system; usually located
centrally just below cockpit glare shield)
MCT Maximum
Continuous Thrust
MCW Modulated
Continuous Wave
MDA McDonnell-Douglas
Aerospace
MDA Minimum
Descent Altitude
MDL Multipurpose
Data Link
MEA Minimum
Enroute Altitude
MEL Minimum
Equipment List
MIDAS Man-Machine
Integration Design and Analysis System (NASA Ames)
MIDAS Multi-discipline
Data Analysis System
MILSPEC Military
Specifications
MIN Minutes
MIN Minimum
MIT Massachusetts
Institute of Technology
MLA ManeuverLimited
Altitude
MLE Landing
Gear Extended Placard Mach Number
MLS Microwave
Landing System
MMO Mach Max
Operating
MN Magnetic
North
MOA Memorandum
of Agreement
MOCA Minimum
Obstruction Clearance Altitude
MOD Modified/Modification
Mode S
Type of secondary surveillance radar (SSR) equipment which provides
Mode A and Mode C interrogations, discrete address (Mode S)
interrogations from the ground or air, and a data link capability
MODIS Moderate-resolution
Imaging Spectrometer
MRA Minimum
Reception Altitude
MSG Message
MSL Mean Sea
Level
MTBF Mean
Time Between Failures
MU Management
Unit
MWP Meteorological
Weather Processor
