Pilot’s Guideviii
List Of Abbreviations And Acronyms (cont.)
METAR Aviation Routine Weather Report
MHz Mega Hertz
MSG Message
MSS Multilink Surveillance System
NACp Navigation Accuracy Category for Position
NAR Non Altitude Reporting
NAS National Airspace System
NEXRAD Regional and Next-Generation Radar
NIC Navigation Integrity Category
NOTAM Notices to Airmen
NM or nmi Nautical Miles
NRM Normal
OT Other Traffic
PA Proximity Advisory
PALT Pressure Altitude
PED Personal Electronic Device (e.g., tablet)
PIREP Pilot Report
P/N Part Number
R Reply
RAIM Receiver Autonomous Integrity Monitoring
REF Reference
RTCA Radio Technical Commission for Aeronautics, Inc.
SBAS Satellite-Based Augmentation System
SIGMET Significant Meteorological Information
SIL Source Integrity Level
SPECI Aviation Special Selected Weather
SPI Special Identification
STBY Standby
SUA Special Use Airspace
SSR Secondary Surveillance Radar
TA Traffic Advisory
TAF Terminal Aerodrome Forecast
TAS Traffic Awareness System
TFC Traffic
TRK Track
TFR Temporary Flight Restrictions
TIS-B Traffic Information Service - Broadcast
TSO Technical Standard Order
UAT Universal Access Transceiver
UNR Unrestricted
VFR Visual Flight Rules
VMC Visual meteorological conditions
WAAS Wide Area Augmentation System
Wx Weather
XPDR Transponder
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