m metre (= 3.279 ft)
M re: Mach
MAC Mean aerodynamic chord; also: Military Airlift Command (USAF)
Mach Mach number; the aircraft speed divided by the speed of sound; in a standard
   atmosphere at s/l Mach 1 is 661 kts (= 1225 km/h); at 36000 ft Mach 1 is 574 kts
   (= 1063 km/h)
MAD Magnetic anomaly detector; also: mutually assured destruction
MAG Marine Air Group (USMC)
manifest List of all passengers and cargo for a specific flight
MANPADS Man-portable air defence system
MAP Military Aid Program; also: Mutual Assistance Program; also: Military Assistance
  Program
MAPO Moscow Aircraft Production Organisation
MARS Mid-Air Recovery/Retrieval System (USN/USAF)
MARV Manoeuvring re-entry vehicle
mass balance Weight attached to control surface; reduces or eliminates flutter
MATS Military Air Transport Service; predecessor of MAC (USAF)
MATZ Military air traffic zone
MAW Marine Air Wing (USMC); also: Military Airlift Wing (USAF)
MAWS Missile approach warning system
mb Millibar; re: bar
MCAS Marine Corps Air Station (USMC)
MCM Mine counter measures
MCP Maximum continuous power
MCU Management control unit
MEDA Military emergency diversion airfield
medevac Medical evacuation
MEP Mission equipment package
MER Multiple ejector rack
MEWSG Maritime Electronic Support Warfare Group (UK)
MEZ Maritime exclusion zone
MF Medium frequency
MFD Multi-function display
MG Machinegun
MGTOW Maximum gross take-off weight
MHz Megahertz
MIL-STD Military standard
MILSTAR Military Strategic and Tactical Relay (US)
MIRV Multiple independently-targeted re-entry vehicles
MIS Missile Squadron (US)
missed approach An approach which is aborted, followed by an overshoot
MLS Microwave landing system
MLU Mid-life upgrade; also: mid-life update
MLW Maximum landing weight
mm Millimetre
MMH/FH Maintenance man-hours per flight hour
MMO Maximum operating Mach number
MMS Mission management system; also: mast mounted sight (helicopter)
MNE Mach number never to exceed; not used in normal flight; available in emergency
MMWR Millimetre wave radar
MoA Memorandum of agreement
MoD Ministry of defence
mod Modified; also: modification
monocoque Construction method in which all strenght is in the outer skin and directly underlying
   stringers and frames, without any interior structure
MoU Memorandum of understanding
MPA Maritime patrol aircraft; also: man-powered aircraft
MPC Missile practice camp
MPD Multi purpose display
mph Miles per hour (1 mph = 1.609 km/h = 1.151 kts)
MPR Military power reserve; also: maximum power reserve
MR Maritime reconnaissance; also: medium range
MRAAM Medium range air-to-air missile
MRL Multiple rocket launcher
MRO Maintenance, repair and overhaul
MRW Maximum ramp weight
MSA Minimum safe altitude
MSIP Multi stage improvement programme; also: multinational staged improvement
  programme
MSL or msl Mean sea level
MSPS Modular self protection system
MTA Military training area
MTBF Mean time between failure
MTBM Mean time between maintenance
MTBO Mean time between overhauls
MTBR Mean time between removals; also: mean time between repairs; also: mean time
  between replacement
MTD Moving target detection
MTI Moving target indicator; a radar facility
MTOGW Maximum take-off gross weight
MTOW Maximum take-off weight
MTT Multiple target tracking
MU Maintenance Unit (RAF)
MW Medium wave; also: Missile Wing (USAF)
MYP Multiyear procurement (US)
MZFW Maximum zero fuel weight
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