Garmin G1000 Cockpit Reference Guide for the Columbia 350/400 190-00567-01 Rev. A2-6SECTION 2FLIGHT INSTRUMENTSLow Altitude Annunciation (WAAS Only)NOTE: The LOW ALT annunciation is not availablewhen the G1000 is configured with TAWS (TerrainAwareness & Warning System), unless TAWS isinhibited.When the Final Approach Fix (FAF) is the activewaypoint in a GPS WAAS approach using vertical guidance,a LOW ALT (Low Altitude) annunciation may appear ifthe current aircraft altitude is at least 164 feet below theprescribed altitude at the FAF. The annunciation initiallyflashes. After a few seconds the flashing stops and theannunciation is displayed as shown in Figure 2-10.Figure 2-10 Low Altitude on GPS ApproachLow AltitudeAnnunciation2.4 VERTICAL DEVIATION/GLIDEPATH/GLIDESLOPE INDICATORThe Vertical Deviation and Required Vertical SpeedIndicators appear when vertical guidance is being givenprior to executing an approach (see Figure 2-11). Insystems that are WAAS enabled, the Glidepath Indicatorappears at a point prior to the FAF when executing an LPV,LNAV/VNAV, or LNAV+V approach (see Figure 2-12).VerticalDeviationIndicatorRequiredVerticalSpeedVerticalSpeedPointerVerticalSpeedIndicatorVNVTargetAltitudeFigure 2-11 Vertical Speed and Devia-tion Indicators (VSI and VDI)
