TX56/56A and TX57/57A Installation Manual
5 April 2022
01776-00-01
Issue AD
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Page 62
Trig Avionics
available, but the Com radio will continue to operate
normally.
8.21 Fault Annunciation
If the VHF radio detects a catastrophic internal failure, the screen will indicate
FAULT and a brief statement of the problem. Note the FAULT message at the
bottom of the screen and pass that information to your avionics maintenance
organisation. The fault may be cleared by re-cycling the power to the radio but
if the fault is still present the message will reappear.