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6 – i ndex
MON
Monday
MON
AboveMountains
+MOPS MinimumOperational
PerformanceStandards
MOV
Move, Moved, Moving,
Movement
MOWP
Method ofWorkingPlan
MPS
Meters per Second
MRG
MediumRange
MRP
ATS/METReportingPoint
MS
Minus
#MSA
MinimumSectorAltitude
MSG
Message
MSL
MeanSea Level
MSSR MonopulseSecondary
SurveillanceRadar
MT
Mountain
MTOW
MaximumTake-offWeight
MTP
MaximumTyrePressure
MTW
MountainWaves
MVA
MinimumVectorAltitude
MWO
MeteorologicalWatchOffice
MX
Mixed type of ice formation
(white and clear)
N
N
North, NorthLatitude
NAIPS
National Aeronautical
InformationProcessingSystem
NAP
NoiseAbatement Procedures
NAT
NAVAIDTraining
NAV
Navigation
NAVAID
NavigationAid
NB
Northbound
NBFR
Not Before
NC
NoChange
NCD
NoCloudDetected (by
ceilometer) [used in automated
METAR/SPECI]
#NDB
NonDirectional RadioBeacon
NDV
NoDirectional Variation
reporting capability (by
vismeter) [used in automated
METAR/SPECI]
NE
North-East
NEG
Negative, no, Permission not
granted, or that is not correct
NGT
Night
+NIL
None
NM
Nautical Miles
NML
Normal
NNE
NorthNorth-East
abbreviations and acronyms
CODE DEFINITION
CODE DEFINITION