trig TY91 - Fault Annunciation and Handling; Connection and Radio Faults; Internal Failure and Dual Control Faults

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No Radio
Connection between the controller and the remote
radio has been lost.
Radio Fault
The remote radio is reporting an unspecified fault.
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.
Dual Control Warnings and Fault Annunciations
In a dual control head installation, any warning or fault annunciation
will be displayed on both controllers. If one of the controllers suffers a
failure, the second controller may still continue to control the radio.
The fault should be investigated and rectified as soon as possible. It is
not advisable to continue to operate a dual control setup with only one
controller operational.