Garmin G3X Pilot’s Guide190-01115-00 Rev. K13System OverviewSystemOverviewFlightInstruments EISCNSInterfaceGPSNavigationFlightPlanningHazardAvoidanceAdditionalFeatures AFCS Annun/Alerts Appendix IndexEXTERNAL NAVIGATORS (OPTIONAL)The G3X can also communicate with the following optional external navigators:• SL30 Nav/Comm Transceiver• SL40 Comm Transceiver• GTR series Comm Transceiver• GNC series Nav/Comm Transceiver• GTN or GNS Series UnitsUSING THE G3X WITH AN EXTERNAL GPS NAVIGATORWARNING: Do not use the approach information provided by the VFRnavigation database residing within the G3X as a means of navigating anyinstrument approach. The G3X VFR navigation database is limited to presentonly the waypoints for the final approach leg of a published procedure. Thesewaypoints and associated course line are made available for monitoringpurposes only.In a configuration which includes one or more external GPS navigators (i.e., GTN orGNS Series), the G3X displays the selected external GPS Navigator’s flight plan andguidance information. When using an external GPS navigator with the G3X, press theINTERNAL Softkey on the Active Flight Plan Page or Direct-To Page to make changesto the active flight plan from the G3X. Press the EXTERNAL Softkey to return to theexternal GPS navigator’s flight plan. When an external navigator is configured theinternal GPS can still be used for VFR navigation.NOTE: The G3X internal GPS flight plan is only for VFR use.Changing the navigation SourCeWhen an external navigator that supports both GPS and VOR/ILS capabilities (i.e.,GTN or GNS Series) is selected, the external navigator’s CDI Key is used to switch theG3X HSI between GPS and VOR/ILS navigation.
