IFD500 Series Pilot Guide
Map Subsystem 4-53
TAWS INHIBIT CONTROL
The FLTA and PDA functions of TAWS can be inhibited by several
means including the Setup Page, an external switch, and the TAWS
page. Inhibiting these two functions can be useful in some scenarios
like VFR flight in an area of significant terrain, VFR low altitude flight,
and during operations at airfields that are not in the nav database or
to user waypoints that have been designated as an airport.
TAWS SELF-TEST
TAWS self-test is conducted automatically at power up. While the
self-test is running, external TAWS related annunciators are
illuminated and the TAWS page will show “TAWS Self-Test In
Progress”. Whether the self-test passed or failed will be annunciated
using an aural message.
If TAWS had passed self-test and then fails at some point later in the
power cycle, a “bing-bong” chime is issued along with a CAS
message.
DEGRADED OR NO TAWS CONDITIONS
TAWS is degraded or not available when any of the following
conditions exists:
GPS is unavailable or in Dead Reckoning mode
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