Appendix C C-7 Acronym Meaning FAS Final Approach Segment FMS Flight Management System FOG Flight Operations Group FPAG Flight Procedures and Airspace Group FSS Flight Service Station GPS Global Positioning System HEDA Helicopter En Route Descent Area HSI Horizontal Situation Indicator IAP Instrument Approach Procedure ICAO International Civil Aviation Organization IF Intermediate Approach Fix IFR Instrument Flight Rules IMC Instrument Meteorological Conditions KIAS Knots Indicated Airspeed LAWRS Limited Aviation Weather Reporting System LOA Letter of Authorization LORAN-C Long-Range Navigation-C System MAP Missed Approach Point MDA Minimum Descent Altitude MDH Minimum Descent Height MEA Minimum En Route Altitude MEL Minimum Equipment List METAR Aviation Routine Weather Report MHz Megahertz MIA Minimum IFR Altitude
Appendix C C-8 Acronym Meaning MSL Mean Sea Level NAD North American Datum NASA National Aeronautics and Space Administration NM Nautical Miles NSP National Simulator Program NWS National Weather Service OpSpec Operations Specification OSAP Offshore Standard Instrument Operation PI Principal Inspector PIC Pilot in Command PinS Point in Space POI Principal Operations Inspector RA Radio Altitude RASS Remote Altimeter Setting Source RNAV Area Navigation ROC Required Obstruction Clearance rpm Revolutions per Minute SAWRS Supplementary Aviation Weather Reporting System SIAP Standard Instrument Approach Procedure SIC Second in Command sm Statute Mile SPECI Aviation Selected Special Weather Report STC Supplemental Type Certificate TAF Terminal Area Forecast TC Type Certificate
Appendix C C-9 Acronym Meaning TERPS Terminal Instrument Procedures TIS-B Traffic Information Service-Broadcast TP Turning Point TSO Technical Standard Order UAT Universal Access Transceiver VFR Visual Flight Rules VORTAC Very High Frequency Omnidirectional Range Collocated Tactical Air Navigation WAAS Wide Area Augmentation System WGS World Geodetic System
Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by contacting the Flight Technologies and Procedures Division at 9-AWA-AFS400-Coord@faa.gov or the Flight Standards Directives Management Officer at 9-AWA-AFB-120-Directives@faa.gov.
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