190-00726-00 Rev. J Garmin G900X Pilot’s Guide 71FLIGHT INSTRUMENTSSYSTEMOVERVIEW FLIGHTINSTRUMENTS EIS AUDIO PANEL& CNS FLIGHTMANAGEMENT HAZARDAVOIDANCE AFCS ADDITIONALFEATURES APPENDICES INDEXVERTICAL DEVIATIONNOTE: The Glidepath Indicator is only shown for aircraft with GIA 63W Integrated Avionics Units when SBASis available.The Vertical Deviation Indicator (VDI; Figure 2-14) is a magenta chevron indicating the baro-VNV verticaldeviation when Vertical Navigation (VNV) is being used. The VDI appears in conjunction with the “TOD within1 minute” alert. The VDI is removed from the display if vertical deviation becomes invalid. See the FlightManagement Section for details on VNV features, and refer to Section 2.2, Supplemental Flight Data, for moreinformation about VNV indications on the PFD.The Glideslope Indicator (Figure 2-15) appears to the left of the Altimeter when an ILS frequency is tuned inthe active NAV field. A green diamond acts as the Glideslope Indicator, like a glideslope needle on a conventionalindicator (except it does not appear during a localizer back course approach). If a localizer frequency is tunedand there is no glideslope, “NO GS” is displayed in place of the diamond.The glidepath is analogous to the glideslope for GPS approaches supporting SBAS vertical guidance (LNAV+V,L/VNAV, LPV). When an approach of this type is loaded into the flight plan and GPS is the selected navigationsource, the Glidepath Indicator (Figure 2-16) appears as a magenta diamond during the approach. If theapproach type downgrades past the final approach fix (FAF), “NO GP” is displayed in place of the diamond.Full-scale deflection (two dots) is 1000 feet.GlidepathIndicatorFigure 2-16 Glidepath IndicatorVerticalDeviationIndicatorRequiredVerticalSpeedVerticalSpeedPointerVerticalSpeedIndicatorVNV TargetAltitudeFigure 2-14 Vertical Speed andDeviation Indicators (VSI and VDI)GlideslopeIndicatorMarkerBeaconAnnunciationFigure 2-15 Glideslope Indicator
