S  T  SA—Situational Awareness  SAMS—Special Use Airspace Management System  SAR—Search and Rescue  SAS—Stability Augmentation System  SDF—Simplified Directional Facility  SDR—Service Difficulty Reports  SER—Start End of Runway  SIAP—Standard Instrument Approach Procedure  SID—Standard Instrument Departure  SIGMET—Significant Meteorological Information  SM—Statute Mile  SMA—Surface Movement Advisor  SMGCS—Surface Movement Guidance and Control System  SOIA—Simultaneous Offset Instrument Approaches  SOP—Standard Operating Procedure  SPECI—Non-routine (Special) Aviation Weather Report  SSV—Standard Service Volume  STAR—Standard Terminal Arrival  STARS—Standard Terminal Automation Replacement System  STC—Supplemental Type Certificate  SUA—Special Use Airspace  SUA/ISE—Special Use Airspace/In-flight Service Enhancement  SVFR—Special Visual Flight Rules  SVGS – Synthetic Vision Guidance System  SVS—Synthetic Vision System  SWIM—System Wide Information Management  SWAP—Severe Weather Avoidance Plan  TA—Traffic Advisory  TAA—Terminal Arrival Area  TACAN—Tactical Air Navigation  TAF—Terminal Aerodrome Forecast  TAS—True Air Speed  TAWS—Terrain Awareness and Warning Systems  TB—Track Bar  TCAS—Traffic Alert and Collision Avoidance System  TCH—Threshold Crossing Height  TDLS—Terminal Data Link System  TDZ—Touchdown Zone  TEC—Tower En-route Control  TDZE—Touchdown Zone Elevation  TERPS—Terminal Instrument Procedures  TFR—Temporary Flight Restriction  TIBS—Telephone Information Briefing Service  TIS-B—Traffic Information Service-Broadcast  TIBS—Telephone Information Briefing Service  TOD—Top Of Descent  TODA—Takeoff Distance Available  TOC—Top Of Climb  TOGA—Takeoff/Go Around  B-7 