Garmin G3X Pilots Guide - Page 357

System Overview Flight Instruments EIS CNS Interface GPS Navigation Flight Planning Appendix H gal Glide Ratio, G/R GND gph GPS Grid MORA Groundspeed Ground Track GS gallon(s) The estimated distance an aircraft will move forward for any given amount of lost altitude. ground gallons per hour Global Positioning System Grid Minimum Off-Route Altitude; one degree latitude by one degree longitude in size and clears the highest elevation reference point in the grid by 1000 feet for all areas of the grid The velocity that the aircraft is travelling relative to a ground position. see Track Ground speed Heading Hg hPa hr HSI Hz The direction an aircraft is pointed, based upon indications from a magnetic compass or a properly set directional gyro. mercury hectopascal hour Horizontal Situation Indicator Hertz IAF Initial Approach Fix IAT Indicated Air Temperature ICAO International Civil Aviation Organization IFR Instrument Flight Rules ILS Instrument Landing System IMC Instrument Meteorological Conditions in inch Hazard Avoidance Additional Features Integrated Autopilot Annun/Alerts Appendix Index 190-01115-00 Rev. F Garmin G3X Pilot's Guide 339