IFD500 Series Pilot Guide
7-12 General
Radar: Target Alert Detected
Alerts the pilot to the presence of a significant weather cell
that exists beyond the currently selected display range.
TAWS EDR algorithm has determined a potential CFIT
scenario is developing - recover the aircraft.
Invalid GPS Position/Velocity
The GPS solution is lost or the GPS velocity quality
parameters dropped below required accuracy limits. A “bing-
bong” chime is played if this condition occurs. Contact the
Avidyne Service Center if this persists across power cycles.
TAWS Failed Self-Test <reason>
TAWS failed self-test for the <reason> provided and TAWS
will be degraded or not available for the duration of this
power cycle. Contact the Avidyne Service Center if this
persists across power cycles.
TIS traffic communications have ceased for more than 12
seconds.
No TIS ground station is available or communications have
ceased for more than 60 seconds.
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