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Part Three: Section 3
TAWS Alerts
"Five-Hundred" Aural Alert
The purpose of the aural alert message "Five-Hun-
dred" is to provide an advisory alert to the pilot that
the aircraft is five-hundred feet above terrain. When
the aircraft descends within 500 feet of terrain, the
aural message "Five-hundred" is generated. There are no
display annunciations or pop-up alerts that accompany
the aural message.
TAWS Not Available Alert
Garmin TAWS requires a 3-D GPS navigation solu-
tion along with specific vertical accuracy minimums.
Should the navigation solution become degraded, or if
the aircraft is out of the database coverage area, the an-
nunciation "TER N/A" is generated in the annunciation
window. When the GPS signal is re-established and the
aircraft is within the database coverage area, the "TER
N/A" annunciation is removed.
"TERRAIN NOT AVAILABLE" Display
Position Outside Terrain Database Coverage
42
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190-00356-30 Rev H
No GPS Position
TAWS Failure Alert
TAWS continually monitors several system-critical
items, such as database validity, hardware status, and
GPS status. If the terrain/obstacle database is not avail-
able, the aural message "TAWS System Failure" is issued
along with the "TER FAIL" annunciation.
TAWS FAILED Display
TAWS Alert Summary
The aural alert voice gender is configurable to be
either male or female. Also, there are different alert
text phrases available for several of the alerts, as shown
below. See your Garmin installer for further informa-
tion on configuring the alert system.
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