Htaws Not Available Alert; Htaws Failure Alert; Htaws Alert Summary - Garmin GTN 725 Pilot's Manual

11.4.15 HTAWS Not Available Alert

Garmin HTAWS requires a 3-D GPS navigation solution along with specific
vertical accuracy minimums. Should the navigation solution become degraded,
or if the aircraft is out of the database coverage area, the annunciation "HTAWS
N/A" is shown in the annunciation window. When the GPS signal is re-
established and the aircraft is within the database coverage area, the "HTAWS
N/A" annunciation is removed.

11.4.16 HTAWS Failure Alert

HTAWS continually monitors several system-critical items, such as database
validity, hardware status, and GPS status. If the terrain/obstacle database is not
available, the aural message "HTAWS System Failure" is issued along with the
"HTAWS FAIL" annunciation.

11.4.17 HTAWS Alert Summary

The aural alert voice gender is configurable to be either male or female. See
your Garmin installer for further information on configuring the alert system.
HTAWS
Annunciation
190-01007-03 Rev. D
Pop-Up Alert
None
None
None
Garmin GTN 725/750 Pilot's Guide
Aural Message
"HTAWS System Failure"
None
"HTAWS Not Available"
"Caution - Terrain, Terrain"
"Warning - Terrain, Terrain"
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
Direct-To
Wpt Info
Description
HTAWS has failed
HTAWS has been
inhibited by the
crew, or the
Weather
aircraft ground-
speed is below 30
Nearest
knots (automatic
inhibiting).
Services/
HTAWS not
available.
Utilities
Forward Looking
Terrain Avoidance
System
Caution for
Terrain
Messages
Forward Looking
Terrain Avoidance
Symbols
Warning for
Terrain
Appendix
11-37
FPL
Proc
Charts
Map
Traffic
Terrain
Music
Index