AIM
4/20/23
Appendix 3
−
4
Abbreviations/Acronyms
Abbreviation/
Acronym
Meaning
RA . . . . . . . .
Resolution Advisory
RAA . . . . . . .
Remote Advisory Airport
RAIM . . . . . .
Receiver Autonomous Integrity Monitoring
RAIS . . . . . .
Remote Airport Information Service
RBDT . . . . . .
Ribbon Display Terminals
RC . . . . . . . .
Radio
−
Controlled
RCAG . . . . .
Remote Center Air/Ground
RCC . . . . . . .
Rescue Coordination Center
RCLS . . . . . .
Runway Centerline Lighting System
RCO . . . . . . .
Remote Communications Outlet
RID . . . . . . . .
Remote Identification
RPIC . . . . . . .
Remote Pilot
−
in
−
Command
TAF . . . . . . .
Aerodrome Forecast
RD . . . . . . . .
Rotor Diameter
REIL . . . . . . .
Runway End Identifier Lights
REL . . . . . . .
Runway Entrance Lights
RFM . . . . . . .
Rotorcraft Flight Manual
RLIM . . . . . .
Runway Light Intensity Monitor
RMI . . . . . . .
Radio Magnetic Indicator
RNAV . . . . . .
Area Navigation
RNP . . . . . . .
Required Navigation Performance
ROC . . . . . . .
Required Obstacle Clearance
RPAT . . . . . .
RNP Parallel Approach Runway
Transitions
RVR . . . . . . .
Runway Visual Range
RVSM . . . . . .
Reduced Vertical Separation Minimum
RWSL . . . . . .
Runway Status Light
SAA . . . . . . .
Sense and Avoid
SAFO . . . . . .
Safety Alerts For Operators
SAM . . . . . . .
System Area Monitor
SAR . . . . . . .
Search and Rescue
SAS . . . . . . .
Stability Augmentation System
SATR . . . . . .
Special Air Traffic Rules
SBAS . . . . . .
Satellite
−
based Augmentation System
SDF . . . . . . .
Simplified Directional Facility
SFL . . . . . . . .
Sequenced Flashing Lights
SFR . . . . . . .
Special Flight Rules
SFRA . . . . . .
Special Flight Rules Area
SGI . . . . . . . .
Special Government Interest
SIAP . . . . . . .
Standard Instrument Approach Procedure
SID . . . . . . . .
Standard Instrument Departure
SIGMET . . . .
Significant Meteorological Information
SM . . . . . . . .
Statute Mile
SMGCS . . . .
Surface Movement Guidance Control
System
SNR . . . . . . .
Signal
−
to
−
noise Ratio
SOIA . . . . . .
Simultaneous Offset Instrument
Approaches
Abbreviation/
Acronym
Meaning
SOP . . . . . . .
Standard Operating Procedure
SPC . . . . . . .
Storm Prediction Center
SPS . . . . . . . .
Standard Positioning Service
STAR . . . . . .
Standard Terminal Arrival
STARS . . . . .
Standard Terminal Automation
Replacement System
STMP . . . . . .
Special Traffic Management Program
sUAS . . . . . .
Small UAS
TA . . . . . . . . .
Traffic Advisory
TAA . . . . . . .
Terminal Arrival Area
TAC . . . . . . .
Terminal Area Chart
TACAN . . . .
Tactical Air Navigation
TAS . . . . . . .
True Air Speed
TCAS . . . . . .
Traffic Alert and Collision Avoidance
System
TCH . . . . . . .
Threshold Crossing Height
TD . . . . . . . .
Time Difference
TDLS . . . . . .
Tower Data Link System
TDWR . . . . .
Terminal Doppler Weather Radar
TDZ . . . . . . .
Touchdown Zone
TDZE . . . . . .
Touchdown Zone Elevation
TDZL . . . . . .
Touchdown Zone Lights
TEC . . . . . . .
Tower En Route Control
THL . . . . . . .
Takeoff Hold Lights
TIS . . . . . . . .
Traffic Information Service
TIS
−
B . . . . . .
Traffic Information Service
−
Broadcast
TLS . . . . . . .
Transponder Landing System
TPP . . . . . . . .
Terminal Procedures Publications
TRSA . . . . . .
Terminal Radar Service Area
TRUST . . . . .
The Recreational UAS Safety Test
TSO . . . . . . .
Technical Standard Order
TWIB . . . . . .
Terminal Weather Information for Pilots
System
U.S. . . . . . . .
United States
UA . . . . . . . .
Unmanned Aircraft
UAM . . . . . .
Urban Air Mobility
UAS . . . . . . .
Unmanned Aircraft System
UASFM . . . .
UAS Facility Map
UAV . . . . . . .
Unmanned Aerial Vehicle
UFO . . . . . . .
Unidentified Flying Object
UHF . . . . . . .
Ultrahigh Frequency
USCG . . . . . .
United States Coast Guard
UTC . . . . . . .
Coordinated Universal Time
UTM . . . . . . .
UAS Traffic Management
UWS . . . . . . .
Urgent Weather SIGMET
UWS . . . . . . .
Urgent Weather SIGMET
VAR . . . . . . .
Volcanic Activity Reporting
3/15/07
7110.65R CHG 2
AIM
10/5/23