External Htaws Inhibit Control; Reduced Protection Mode - Garmin GTN 725 Pilot's Manual

11.4.4.3

External HTAWS Inhibit Control

An optional installation is allowed for providing an external HTAWS Inhibit
switch. Touching the external HTAWS Inhibit switch toggles the HTAWS inhibit
on and off in the same manner as using the Terrain Menu selection.
11.4.4.4

Reduced Protection Mode

The Reduce Protection (RP) functionality allows operating with a reduction
in the alerting thresholds, and suppresses visual and aural annunciation of
caution alerts. Reduced protection allows low level operations and landings off
airport with a minimum number of alerts while continuing to provide protection
from terrain and obstacles. Reduced Protection should only be selected when
operating in visual contact with the terrain as alerting times are significantly less
than in normal mode. There is support for an external RP Mode switch and an
external Alert Acknowledge switch.
To toggle protection:
1. While viewing the Terrain/HTAWS Page, touch MENU.
2. Touch the RP Mode key to toggle the RP mode on and off.
The green bar will show when RP mode is active.
3. Touch Back to return to the Terrain/HTAWS display. The "RP
Mode" annunciation is displayed in the terrain annunciator
field and in the lower right corner of the terrain page whenever
protection is reduced.
190-01007-03 Rev. D Garmin GTN 725/750 Pilot's Guide
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