190-01263-01 Rev. A
Garmin G2000 Pilot’s Guide for the Cessna T240
172
Audio And CnS
SYSTEM
oVERViEW
FLiGHT
inSTRuMEnTS
EiSAudio & CnS
FLiGHT
MAnAGEMEnT
HAZARd
AVoidAnCE
AFCS
AddiTionAL
FEATuRES
APPEndiCESindEX
4.6 AbnorMAl operAtion
Abnormal operation of the G2000 includes equipment failures of the system 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 Touchscreen Controller to advise the pilot of a stuck microphone.
The
MIC
Button Annunciator flashes as long as the PTT Key remains stuck.
Figure 4-60
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. Depending on the failure mode, a yellow X may appear on the
frequency display.
Figure 4-61 COM Tuning Failure
Emergency Channel
Loaded Automatically
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