5-35190-01102-02 Rev. B Garmin G500 Pilot’s GuideForewordSec 1SystemSec 2PFDSec 3MFDSec 4HazardAvoidanceSec 5AdditionalFeaturesSec 6Annun.& AlertsSec 7SymbolsSec 8Glossary Appendix AAppendix BIndex5.7.2.3 Horizon HeadingThe Horizon Heading is synchronized with the HSI and shows compassheadings in 30-degree increments on the Zero-Pitch Line. Horizon heading tickmarks and digits appearing on the zero-pitch line are not visible when they arebehind either the airspeed or altitude display. Horizon Heading is activated anddeactivated by pressing the HRZN HDG soft key.Horizon HeadingFigure 5-29 Horizon Heading5.7.2.4 Airport SignsAirports Signs provide a visual representation of airport location andidentification on the synthetic terrain display. When activated, the signs appearon the display when the aircraft is approximately 15 NM from an airport anddisappear at approximately 4.5 NM. Airport signs are shown without theidentifier until the aircraft is approximately 9 NM from the airport. Airport signsare shown behind the airspeed or altitude display. Airport signs are activated anddeactivated by pressing the APT SIGNS soft key.Airport Sign without Identifier(Between 9 NM and 15 NM) Airport Sign with Identifier(Between 4.5 NM and 9.0 NM)Figure 5-30 Airport Signs