Pilot's Guide

190-009663-02 Rev. B Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi 135
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ashesaslongasthePTTKeyremains
stuck.
Figure 4-47 Stuck Microphone Alert
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.
Figure 4-48 COM Tuning Failure
Emergency Channel
Loaded Automatically