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HTAWS Not Available Alert
Garmin HTAWS requires a 3-D GPS navigation so-
lution 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 “TAWS N/A” is generated in the annun-
ciation window. When the GPS signal is re-established
and the aircraft is within the database coverage area,
the “TAWS N/A” annunciation is removed.
“TAWS NOT AVAILABLE” Display
Position Outside Terrain Database Coverage
No GPS Position
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 “TAWS FAIL” annunciation.
HTAWS FAILED Display
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.
Part Four: Section 3
HTAWS Alerts
190-00356-30 Rev H
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