Garmin G900X Pilot’s Guide 190-00726-00 Rev. J494AUTOMATIC FLIGHT CONTROL SYSTEMSYSTEMOVERVIEWFLIGHTINSTRUMENTSEISAUDIO PANEL& CNSFLIGHTMANAGEMENTHAZARDAVOIDANCEAFCSADDITIONALFEATURESAPPENDICESINDEX7.3 VERTICAL MODESTable 7-2 lists the vertical modes with their corresponding controls and annunciations. The mode reference isdisplayed next to the active mode annunciation for Altitude Hold, Vertical Speed, and Flight Level Change modes.The NOSE UP/NOSE DN Keys can be used to change the vertical mode reference while operating under PitchHold, Vertical Speed, or Flight Level Change Mode. Increments of change and acceptable ranges of values foreach of these references using the NOSE UP/NOSE DN Keys are also listed in the table.Vertical Mode Description Control Annunciation ReferenceRangeReferenceChangeIncrementPitch HoldHolds aircraft pitch attitude; maybe used to climb/descend to theSelected Altitude(default) PIT -15° to +20° 0.5°Selected Altitude Capture Captures the Selected Altitude * ALTSAltitude Hold Holds current Altitude Reference ALT Key ALT nnnnn fTVertical SpeedHolds aircraft vertical speed; maybe used to climb/descend to theSelected AltitudeVS Key VS nnnnfpm-3000 to+1500 fpm 100 fpmFlight Level ChangeHolds aircraft airspeed whileaircraft is climbing/descending tothe Selected AltitudeFLC Key FLC nnn kT 90 to 180 kt 1 ktVertical Path Tracking Captures and tracks descent legsof an active vertical profileVNVKey VPTHVNV Target Altitude Capture Captures the Vertical Navigation(VNV) Target Altitude ** ALTVGlidepath*** Captures and tracks the SBASglidepath on approach APRKeyGPGlideslope Captures and tracks the ILSglideslope on approach GSGo AroundDisengages the autopilot andcommands a constant pitch angleand wings levelGAButton GA 6°* ALTS is armed automatically when PIT, VS, FLC, or GA is active, and under VPTH when the Selected Altitude is to be capturedinstead of the VNV Target Altitude.** ALTV is armed automatically under VPTH when the VNV Target Altitude is to be captured instead of the Selected Altitude.***GP is available in installations with GIA 63W IAUs when SBAS is available.Table 7-2 Flight Director Vertical Modes
