Garmin aera 795/796 Pilot’s Guide190-01194-00 Rev. AAppendix J181Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices IndexAPPENDIX J: GLOSSARYADIZ Air Defense Identification ZoneAGL Above Ground LevelAIRMET Airman’s Meteorological InformationARTCC 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 centimeterCOM communication radioCourse The line between two points to be followed by the aircraft.Course to Steer The recommended direction to steer in order to reducecourse error or stay on course. Provides the most efficientheading to get back to the desired course and proceed alongthe flight plan.Crosstrack Error The distance the aircraft is off a desired course in eitherdirection, left or right.dBZ decibels ‘Z’ (radar return)deg degreeDesired Track The desired course between the active “from” and “to”waypoints.DIS distance