Garmin G3X Touch Pilot’s Guide 190-01754-00 Rev. E272AFCSSystemOverviewFlightInstrumentsEISCNSInterfaceGPSNavigationFlightPlanningHazardAvoidanceAdditionalFeaturesAFCSAnnun/AlertsAppendixIndexGLIDESLOPE MODE (GS)Glideslope Mode is available for LOC/ILS approaches to capture and track theglideslope. When Glideslope Mode is armed (annunciated as ‘GS’ in white), LOCApproach Mode is armed as the lateral flight director mode.Selecting Glideslope Mode:1) EXTERNAL NAVIGATOR: Tune and activate the desired localizer frequency.2) EXTERNAL NAVIGATOR: Ensure that LOC is the selected navigation source.3) Press the APR Key (GMC 305) or touch the autopilot and touch APPR Thissimultaneously selects LOC and GS (Glideslope) Modes.Or:1) EXTERNAL NAVIGATOR: Tune and activate the desired localizer frequency.2) EXTERNAL NAVIGATOR: Load the approach (LOC, ILS, LDA, SDF, etc) intothe flight plan.3) Press the APR Key (GMC 305) or touch the autopilot and touch APPR.This simultaneously selects LOC and GS (Glideslope) Modes.Once LOC is the navigation source, the localizer and glideslope can be captured.Upon reaching the glideslope, the flight director transitions to Glideslope Mode andbegins to capture and track the glideslope.Glideslope Mode Armed