Pilot's Guide

190-01255-01 Rev. A
Garmin G1000H
™
Pilot’s Guide for the Bell 407GX
373
HAZARD AVOIDANCE
pressure,temperature,andlapserateshavexedvalues),itiscommonforthebaro-correctedaltitude(asread
fromthealtimeter)todifferfromtheGSLaltitude.
DISPLAYING HTAWS DATA
HTAWSusescolorstodepictterrainandobstaclesrelativetoaircraftaltitude.Colorsareadjustedautomatically
astheaircraftaltitudechanges.ThecolorsandsymbolsinFigure6-91andTables6-10and6-11areusedto
representterrain,obstacles,andpotentialimpactpoints.
Red
Yellow
Green
Black
Lighted Obstacle
Orange
Terrain is more than
250 ft above the
aircraft altitude
Terrain is between 250
ft and 0 ft above the
aircraft altitude
Terrain is between 0 ft
and 250 ft below the
aircraft altitude
Terrain is between 250
ft and 500 ft below the
aircraft altitude
Terrain is more
than 500 ft below
the aircraft altitude
Aircraft Altitude -250 ft
Aircraft Altitude -500 ft
Aircraft Altitude
Aircraft Altitude +250 ft
Figure 6-91 Terrain Altitude/Color Correlation for HTAWS
Unlighted Obstacle Lighted Obstacle
Obstacle Location
< 1000’ AGL > 1000’ AGL < 1000’ AGL > 1000’ AGL
Red obstacle is at or above current aircraft
altitude
Yellow obstacle is between 0’ and 250’
below current aircraft altitude
Gray obstacle is 250’ or more below
current aircraft altitude
Table 6-10 HTAWS Obstacle Colors and Symbology
Potential Impact
Point Symbol
Alert Type
Example
Annunciation
Warning
Caution
Table 6-11 HTAWS Potential Impact Point Symbols with Alert Types