190-01146-00 Rev. A Garmin G950 Pilot’s Guide for the Tecnam P2006T 115AUDIO PANEL AND CNSSYSTEMOVERVIEW FLIGHTINSTRUMENTS EIS AUDIO PANEL& CNS FLIGHTMANAGEMENT HAZARDAVOIDANCE AFCS ADDITIONALFEATURES APPENDICES INDEX4.7 AbNORMAL OPERATIONAbnormal operation of the G950 includes equipment failures of the G950 components and failure of associatedequipment, including switches and external devices.STUCk MICROPHONEIf the push-to-talk (PTT) Key becomes stuck, the COM transmitter stops transmitting after 35 seconds ofcontinuous 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 remainsstuck.Figure 4-47 Stuck Microphone AlertCOM TUNING FAILUREIn case of a COM system tuning failure, the emergency frequency (121.500 MHz) is automatically tuned inthe radio in which the tuning failure occurred. Depending on the failure mode, a red X may appear on thefrequency display.Figure 4-48 COM Tuning FailureEmergency ChannelLoaded AutomaticallyAUDIO PANEL FAIL-SAFE OPERATIONIf there is a failure of the Audio Panel, a fail-safe circuit connects the pilot’s headset and microphone directlyto the COM1 transceiver. Audio will not be available on the speaker.PFD FAILURE (REVERSIONARY MODE)The red DISPLAY BACKUP Button selects the Reversionary Mode. See the System Overview Section formore information on Reversionary Mode.Figure 4-49 Display Backup Button
