Garmin GNC 420W Pilot's Manual Addendum - Page 45

Browse online or download pdf Pilot's Manual Addendum for Marine GPS System Garmin GNC 420W. Garmin GNC 420W 50 pages. Garmin gps receiver quick reference guide
Also for Garmin GNC 420W: Pilot's Manual Addendum (24 pages), Quick Reference (23 pages), Pilot's Manual Addendum (24 pages), Supplementary Manual (12 pages), Quick Reference Manual (25 pages)

Print Page

"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 accom-

pany the aural message.

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.

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

annunciation "TER N/A" is generated in the annuncia-

tion window. When the GPS signal is re-established

and the aircraft is within the database coverage area,

the "TER N/A" annunciation is removed.

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.

Part Three: Section 3

TAWS Alerts