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The following warnings may be seen:
Remote Hot
The remote radio is overheating.
Stuck Mic
The PTT switch has been closed for more than 35 seconds.
Low Volts
The aircraft power input is below 10 volts (TY91) or 16 volts
(TY92).
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.
Summary of Contents for TC90
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