Garmin G1000H Pilot's Manual page 352

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 flight path is calculated to come within minimum clearance altitudes in Figure 6-79.
400
350
300
250
200
150
100
50
0
0
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 flight 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.
340
Required Terrain/Obstacle Clearance
Required Terrain Clearance
1 2 3 4
Distance From Runway (NM)
Distance From Runway/Helipad (NM)
Figure 6-79 FLTA Alert Minimum Terrain and Obstacle Clearance Values
Figure 6-80 Reduced Protection Mode Enabled
System Status Annunciation
Garmin G1000H Pilot's Guide for the Bell 407GX
™
RTC Level (FT)
RTC Descending (FT)
5 6 7 8 9 10
190-01255-00 Rev. A