Garmin G1000H Marine Radio User Manual


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Garmin G1000H
™
Pilot’s Guide for the Bell 407GX
190-01255-00 Rev. B346
HAZARD AVOIDANCE
Imminent Terrain Impact (ITI) and Imminent Obstacle Impact (IOI) alerts are issued when the
aircraftisbelowtheelevationofaterrainorobstaclecellintheaircraft’sprojectedpath.ITIandIOIalerts
areaccompaniedbyapotentialimpactpointdisplayedontheHTAWSPage.Thealertisannunciatedwhen
theprojectedverticalightpathiscalculatedtocomewithinminimumclearancealtitudesinFigure6-79.
Required Terrain Clearance
0
50
100
150
200
250
300
350
400
0 1 2 3 4 5 6
7 8 9 10
Distance From Runway (NM)
Required Terrain Clearance (FT)
RTC Level (FT)
RTC Descending (FT)
Distance From Runway/Helipad (NM)
Required Terrain Clearance (FT)
Required Terrain/Obstacle Clearance
Figure 6-79 FLTA Alert Minimum Terrain and Obstacle Clearance Values
InsituationswhenreducedFLTA alertingsensitivitymaybedesired,suchasin low-leveloperationsor
duringoff-airportlandings,HTAWSoffersaReducedProtection(RP)Mode.WhenRPModeisenabled,the
following occur:
•RTCisreducedtoamaximumof125feetwhengroundspeedisatleast60knots;RTCisreducedtozero
feetatlessthan60knots.
•HTAWSreducesthedistanceoftheprojectedightpathusedtoscanforterrainandobstacles.
•Noauralorvisualcautionalertswillbeissued.
WhenRPModeisenabled,thesystemstatusannunciation‘RPMODE’isshownonthePFDandonthe
HTAWSPageoftheMFD.
Figure 6-80 Reduced Protection Mode Enabled
System Status Annunciation
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