LWIR Long.Wavelength.Infra-Red
LX Lightning
M Mach.Number
m Meter
MAA Maximum.Authorized.IFR.Altitude
MAC Medium.Access.Controller
Mach Number Mach.number.is.the.ratio.of.the.true.airspeed.to.
the speed of sound at a particular flight condition.
It is the chief criterion of airflow pattern and is
usually.represented.by.the.free-stream.steady-
state.value.
Mag Magnetic
Magnetic The.bearing.with.respect.to.magnetic.north.
MAGVAR Magnetic.Variation:.The.difference.between.True.
North.and.Magnetic.North.
Bearing Magnetic North
MAINT MALDT MAN MAP
Marker Beacon
M/ASI MASPS
MAT MAU MAWP MAX MAX CLB MAX CRZ MAZ
MB MBD MBE Mbps
The.direction.north.as.determined.by.the.earth’s.
magnetic field. The reference direct ion for
measurement.of.magnetic.directions. Maintenance Mean.Administrative.and.Logistics.Delay.Time Manual (.1.).Missed.Approach.Point.
(.2.).Mode.Annunciator.Panel.. (.3.).Management.Authorization.Process A.transmitter.operating.at.75.MHz.that.provides.
identification of a particular position along an
airway.or.on.the.approach.to.an.instrument. runway..The.marker.beacon.is.continuously.. tone-modulated.by.a.400-Hz,.a.1,300-Hz.or. a.3,000-Hz.tone..Marker.beacons.along.an. instrument.runway.provide.a.long-course.(range). guidance.and.design.ate.when.an.aircraft.should. be.at.a.certain.altitude.if.the.aircraft.is.following. the.glide.path.
Mach/Airspeed.Indicator
Minimum.Aviation.System.Performance. Standards Maintenance.Access.Terminal Modular.Avionics.Unit Missed.Approached.Waypoint Maximum Maximum.engine.thrust.for.two-engine.climb Maximum.engine.thrust.for.two-engine.cruise MLS.Azimuth:.A.ground.based.radio.that.provides.
lateral.guidance.during.an.MLS.landing. Marker.Beacon Model-Based.Development Multiple.Bit.Error Mega.bytes.per.Second
MC (.1.).Master.Change.. (.2.).Master.Caution
MCA Minimum.Crossing.Altitude
MCB Microwave.Circuit.Board
MCBF Mean.Cycles.Between.Failures
MCC Maintenance.Control.Computer
MCDC Multiple.Condition.Decision.Coverage
MCDP Maintenance.Control.Display.Panel
MCDU Multifunctional.Control.Display.Unit
MCE Modular Cabinet Equipment
MCL Master.Caution.Light
MCN Manufacturing.Control.Number
MCP (.1.).Maintenance.Control.Panel. (.2.).Mode.Control.Panel
MCT Max.Continuous.Thrust
MCU (.1.).Modular.Concept.Unit.(approximately.. 1/8-ATR,.Airline.Transport.Rack).. (.2.).Motor.Control.Unit.(used.in.auto.throttle).. (.3.).Multifunction.Concept.Unit
MDA Minimum.Descent.Altitude
MDC Maintenance.Diagnostic.Computer:.A.computer. that.monitors.for.failures.of.others.systems.
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