Garmin Aera 660 Pilot's Manual page 233

NEXRAD Next Generation Radar
nm nautical mile(s)
OAT Outside Air Temperature
OBS Omni Bearing Selector
psi pounds per square inch
QTY quantity
rpm revolutions per minute
SBAS Satellite-Based Augmentation System
SD Secure Digital
sec second(s)
SIGMET Significant Meteorological Information
TA Traffic Advisory
TACAN Tactical Air Navigation System
TAF Terminal Aerodrome Forecast
TAS True Airspeed
TCAS Traffic Collision Avoidance System
TFR Temporary Flight Restriction
TIS-A Traffic Information Service
TIS-B Traffic Information Service-Broadcast
Track Direction of aircraft movement relative to a ground position;
also 'Ground Track'
TRSA Terminal Radar Service Area
190-02017-20 Rev. E Garmin aera 660 Pilot's Guide
Appendix J
217