190-00498-07 Rev. A
Garmin G1000 Pilot’s Guide for Cessna Nav III
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS EIS AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE AFCS ADDITIONAL
FEATURES APPENDICES INDEX
373
HAZARD AVOIDANCE
normallyaffectpressurealtitudesensors.GSLaltitudedoesnotrequirelocalaltimetersettingstodetermineMSL
altitude.Itisawidely-usedMSLaltitudesource.
Terrainandobstacledatabases arereferencedtoGSL. Using theGPSposition andaltitude,the Terrain-SVS
featureportraysa3-Dpictureofthesurroundingterrainandobstaclesrelativetothepositionandaltitudeofthe
aircraft.GPSposition andGSLaltitudeare usedtocalculateand predicttheaircraft’sightpathin relationto
thesurroundingterrainandobstacles. Inthisway,thepilotcanviewpredicteddangerous terrainandobstacle
conditions.
DISPLAYING TERRAIN-SVS DATA
Terrain-SVSusesyellow (caution)and red(warning)to depictterrain andobstacles (withheights greater
than200feetabovegroundlevel,AGL)alertsrelativetoaircraftaltitude.Colorsareadjustedautomaticallyas
theaircraftaltitudechanges. Thecolorsand symbolsinFigure6-126and Tables6-15and6-16are usedto
represent terrain, obstacles, and potential impact points.
Figure 6-126 Terrain Altitude/Color Correlation for Terrain-SVS
Unlighted Obstacle Lighted Obstacle Obstacle Location
< 1000’ AGL > 1000’ AGL < 1000’ AGL > 1000’ AGL
Red obstacle is above or within 100 ft
below the aircraft altitude
Yellow obstacle is between 100 ft and
1000 ft below the aircraft altitude
Table 6-15 Terrain-SVS Obstacle Colors and Symbology
Potential Impact
Point Symbol Alert Type Example Annunciation
Warning
Caution
Table 6-16 Terrain-SVS Potential Impact Point Symbols with Alert Types