34
Part Three: Section 2
TAWS Operation
TERRAIN configured units will restore the “inhibit
state” at startup to the last pilot-selected setting. TAWS
configured units will always start up with TAWS alerts
uninhibited.
Inhibiting Terrain
To inhibit PDA and FLTA alerts:
1. Select the TAWS Page and press
MENU
.
“Inhibit Terrain?” is selected by default.
2. Press
ENT
. The PDA/FLTA alerts are inhibited.
The
annunciation is displayed in
the terrain annunciator field whenever terrain
is inhibited.
To enable PDA and FLTA alerts:
1. Select the TAWS Page and press
MENU
.
“Enable Terrain?” is selected by default.
2. Press
ENT
. The PDA/FLTA alerts are functional
again.
External TAWS Inhibit Control
An optional installation is allowed for providing
an external TAWS Inhibit switch. Pressing the external
TAWS Inhibit switch toggles the TAWS inhibit on and
off in the same manner as using the Page Menu selec-
tion.
TAWS Manual Test
Garmin TAWS provides a manual test capability
which verifies the proper operation of the aural and
visual annunciations of the system prior to a flight.
“Test Terrain” selection
To manually test the TAWS system:
1. Select the TAWS Page and press
MENU
.
2. Select the “Test Terrain?” option.
3. Press
ENT
to confirm the selection.
An aural message is played giving the test results:
• “
TAWS System Test, OK
” if the system passes the
test
• “
TAWS System Failure
” if the system fail the test
NOTE:
TAWS System Testing is disabled when
ground speed exceeds 30 knots so as not to
impede TAWS alerting.
190-00356-30 Rev C
Summary of Contents for GDL 69A
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