Garmin G3X Pilot’s Guide190-01115-00 Rev. KAppendix H431SystemOverviewFlightInstruments EISCNSInterfaceGPSNavigationFlightPlanningHazardAvoidanceAdditionalFeatures AFCS Annun/Alerts Appendix IndexAPPENDIX H: GLOSSARYADIZ Air Defense Identification ZoneADS-B Automatic Dependant Surveillance-BroadcastADS-B In Ability to receive ADS-B information from other aircraft andGround Based Transceivers (GBTs)ADS-B Out Ability to transmit ADS-B data on 1090 ES or 978 MHzADS-BParticipatingAircraftAn aircraft that has both ADS-B In and ADS-B Outcapabilities.ADS-R Automatic Dependent Surveillance-RebroadcastAGL Above Ground LevelAIM Airman’s Information ManualAIRMET Airman’s Meteorological InformationAOA Angle of AttackAP AutopilotAPT airportASPC airspaceARTCC Air Route Traffic Control CenterASOS Automated Surface Observing SystemATC Air Traffic ControlATIS Automatic Terminal Information ServiceAWOS Automated Weather Observing SystemBearing The compass direction from the present position to adestination waypoint.ºC degrees CelsiusCalibratedAirspeedIndicated airspeed corrected for installation and instrumenterrors.cm centimeter