Abnormal Operation; Stuck Microphone; Com Tuning Failure - Garmin G1000:Beechcraft Baron 58/G58 User Manual

AUDIO PANEL AND CNS

4.7 ABNORMAL OPERATION

Abnormal operation of the G1000 includes equipment failures of the G1000 components and failure of
associated equipment, including switches and external devices.

STUCK MICROPHONE

If the push-to-talk (PTT) Key becomes stuck, the COM transmitter stops transmitting after 35 seconds of
continuous operation. An alert appears on the PFD to advise the crew of a stuck microphone.
The COM1 MIC or COM2 MIC Key Annunciator on the Audio Panel flashes as long as the PTT Key remains
stuck.

COM TUNING FAILURE

In case of a COM system tuning failure, the emergency frequency (121.500 MHz) is automatically tuned in
the radio in which the tuning failure occurred.
4-38
Figure 4-46 Stuck Microphone Alert
Emergency Channel
Loaded Automatically
Figure 4-47 COM Tuning Failure
Garmin G1000 Pilot's Guide for the Beechcraft C90A/GT 190-00663-00 Rev. A