AIRCRAFT ABBREVIATIONS

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m Meter
mbar Millibar
mile/h Miles per Hour
min Minute
ml Milliliter
mm Millimeter
mm2 Square Millimeter
mm3 Cubic Millimeter
mr/hr Milliroentgens per Hour
mrem/hr Millirems per hour
m3 Cubic Meter
M Mach
M Mach Number
M Magenta
M Maneuvering Speed (EFIS)
M Mode
Mag.M Magnetized Material
Mn Mach Number
MA Maintenance Annunciator
MA Milli-Ampere
MAA Maximum Authorized IFR Altitude
MAAP Members and Associated Partners
MAC Maintenance Action Classification
MAC Mean Aerodynamic Chord
MADAR Malfunction Detection Analysis and Recording Subsystem
MAG Magazine
MAG Magnetic
MAG DEC Magnetic Declination
MAG VAR Magnetic Variation
MAGN Magnetron
MAIDS Multipurpose Automatic Inspection and Diagnostic System
MAIN MUX Main Multiplexer
MAINT Maintenance
MALS Medium Intensity Approach Light System
MALSR Medium Intensity Approach Light System with Runway Align
MAN Manual
MAP Ground Mapping
MAP Master Annunciator Panel
MAP Missed Approach Segment
MAPSP Master Attendant Passenger Service Panel
MAS Milli-Ampere/Seconds
MAS Modification Approval Sheet
MASI Mach Airspeed Indicator
MAT Multi-purpose Access Terminal
MAWP Missed Approach Waypoint
MAX Maximum
MAX CLB Maximum Climb
MAX DES Maximum Descent
MAX END Maximum Endurance
MB Millibars
MC Master Change
MC Material Cost
MCi Millicurie
MCA Minimum Crossing Altitude
MCBF Mean Cycles between Failures
MCC Modification Customer Chart
MCDU Multipurpose Control & Display Unit
MCL Maximum Climb
MCR Manufacturer Change Request
MCR Maximum Cruise
MCT Maximum Continuous Thrust
MCU Modular Concept Unit
MCUR Mean Cycle Between Unscheduled Removals
MCVL Manual Configuration Variation List
MCW Modulated Continuous Wave
MDA Minimum Decision Altitude
MDA Minimum Descent Altitude
MDAU Modular Data Acquisition Unit
MDCC Main Deck Cargo Compartment
MDDU Multipurpose Disk Drive Unit
MDF Medium Frequency Direction Finding Station
MDL Module
MDU Multiplier Divider Unit
MEA Minimum En Route IFR Altitude
MEAS Measurement
MEASRG Measuring
MEC Main Engine Control
MECH "Mechanic, Mechanical, Mechanism"
MED Medium
MEL Minimum Equipment List
MEM Memory
MES Main Engine Start
MET Meteorological
MEV Main Electro Valve
MEV Million Electron-Volts
MEW Manufacturers Empty Weight
MF Medium Frequencies
MFA Memorized Fault Annunciator
MFD Multifunction Display
MFG Manufacturing
MFP Maintenance Facility Planning
MFP Mixed Fission Products
MFR Manufacturer
MFR IDENT Manufacturer Identification
MFTW Maximum Design Fuel Transfer Weight
MFW Maximum Design Flight Weight
MGT Management
MHSU Magnetic Heading Sensor Unit
MHZ Megahertz
MI Magnetic Indicator
MIC Microphone
MICBAC Micro-system Bus Access Channel
MICBAC Micro-System Bus Access Channel
MID Middle
MID Modification Information Document
MIDU Multi-Input Interactive Display Unit
MIN Minimum
MIN FUEL Minimum Fuel
MIN TIME Minimum Time
MIP Maintenance Information Printer
MIPO Manually Issued Purchase Order
MIPS Maintenance Information and Planning System
MISC Miscellaneous
MKGS Markings
MKR Marker (radio) Beacon
MLA Maneuver Load Alleviation
MLD Molded
MLG Main Landing Gear
MLI Magnetic Level Indicator
MLIH Magnetic Level Indicator Housing
MLS Microwave Landing System
MLW Maximum Design Landing Weight
MM Maintenance Manual
MM Middle Marker
MMC Maximum Material Condition
MMDB Mechanical Main Data Bank
MMEL Master Minimum Equipment List
MMH/FH Maintenance Man Hours per Flight Hour
MMI Manual Magnetic Indicator
MMO Mach Max Operating Speed
MMO Maximum Operating Mach
MMR Multi-Mode Receiver
MNFOLD Manifold
MOCA Minimum Obstruction Clearance Altitude
MOD Modification
MOD Modulator
MOD/V Modulating Valve
MODLTR Modulator
MON "Monitor, Monitoring, Monitored"
MONG Monitoring
MORA Minimum Off Route Altitude
MOS Metal Oxide Semiconductor
MOS Metal Oxyde Semiconductor
MOT "Motor, Motorized"
MP Main Processor
MP Maintenance Practices
MP Modification Proposal
MPA Maximum Power Assurance
MPB Micro Processor Bipolar
MPD Maintenance Planning Document
MPDS Maintenance Planning Data Support
MPL Maximum Permitted Life
MPR Multipurpose Register
MPS Maximum Performance Specifications
MPS Multiplex Power Supply
MPU Magnetic Pickup
MPU Modem Processor Unit
MQPB Minimum Quantity Price Break
MRA Minimum Reception Altitude
MRB Maintenance Review Board
MRBD Maintenance Review Board Document
MRIU Maintenance & Recording Interface Unit
MRS Malfunction Reporting Systems
MRW Maximum Ramp Weight
MS AI Maintenance Schedule
MS Military Standard
MSA Minimum Safe Altitude
MSB Most Significant Bit
MSC Maintenance Steering Committee
MSCN Manufacturer Specification Change Notice
MSG Maintenance Steering Group
MSG Message
MSI Maintenance Significant Item
MSI Medium Scale Integrated
MSL Maintenance Significant Item List
MSL Mean Sea Level
MSN Manufacturer Serial Number
MSTR Master
MSU Magnetic Sensor Unit
MSU Mode Selector Unit (IRS)
MSW Microswitch
MT Mount
MTBD Mean Time Between Defects
MTBF Mean Time Between Failure
MTBI Mean Time Between Inspection
MTBIFS Mean Time Between In Flight Shut-down
MTBPR Mean Time Between Premature Removals
MTBR Mean Time Between Removals
MTBT Mean Time Between Trouble
MTBUR Mean Time Between Unscheduled Removals
MTE Manual Test Equipment
MTG Mounting
MTGC Mounting Center
MTI Multi Tank Indicator
MTN Motion
MTO Maximum Take-Off
MTO M{t{o
MTOGW Maximum Takeoff Gross Weight
MTOP Maintenance Task Operating Plan
MTOW Maximum Design Takeoff Weight
MTP Maintenance and Test Panel (AFS)
MTR Meter
MTS Maintenance Training Simulator
MTTF Mean Time to Failure
MTTR Mean Time to Repair
MTTUR Mean Time to Unscheduled Removal
MTUR Mean Time Between Unscheduled Removals
MTW Maximum Design Taxi Weight
MTXW Maximum Taxi Weight
MU Management Unit
MUX "Multiplex, Multiplexer"
MV Multivibrator
MVT Movement
MWARN Master Warning
MWC Master Warning Computer
MWG Maintenance Working Group
MWP Master Warning Panel
MWS Master Warning System
MXR Mixer
MZFCG Maximum Zero Fuel Center of Gravity
MZFW Maximum Design Zero Fuel Weight
M/L Mood Lighting
MACT Module Application Configuration Table
MAF Maintenance Access Function
MAIN MUX Main Multiplexer
MCD Movable Class Divider
MCE Motor Control Electronic
MCPU Motor Control and Protection Unit
MCS Mission Computer Subsystem
MD Main Deck
MDCD Main Deck Cargo Door
MDR Multiregional DBS (Digital Broadcast System) Receiver
MEO Middle Earth Orbit
MEP Main Executive Program
MFS MultiFunction Sensor
MGB Main Gear Box
MGMT Management
MIB Management Information Base
MILA Mini Light Adapter
MLC Mood Lighting Controller
MLFAP Mood Lighting Flight Attendant Panel
MORV Mixer Overpressure Relief Valve
MRBR Maintenance Review Board Report
MSM Monitoring System Module
MCU Master Control Unit
MDU Manual Drive Unit
MFP MultiFunction Probe
MIP Master Interphone Panel
MSU Media Server Unit
MSU Motor Switching Unit
MAG DEC Magnetic Declination
MCCT Module Common Configuration Table
MCDL Master Configuration Deviation List
MHE Magnetic Heading East
MHN Magnetic Heading North
MHS Magnetic Heading South
MHW Magnetic Heading West
MLB Maintenance LogBook
MLGB Main Landing Gear Bay
MONMT Monument
MSDS Material Safety Data Sheet
Modem Modulator-Demodulator
MCA Maintenance Central Access
MPDS Mobile Packet Data Service

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