Garmin G1000 Pilot's Training Guide (-05) - Page 21

Exercise 5.3: Audio Panel Operation 1. Which key should be pressed on the Audio Panel (GMA 1347) to monitor a COM radio frequency without transmitting? Press the COM Key for the selected radio (COM1 or COM2) to monitor the desired communication radio. 2. If available, describe how the split COM feature works and provide a sample scenario of its use. Split COM allows the pilot to use COM1 while the copilot uses COM2. This proves very helpful for talking to an FSS enroute without leaving the ARTCC frequency. Pressing the COM1/2 Key on the Audio Panel turns on the Split COM function. 3. What purpose does the red button located at the bottom of the Audio Panel (GMA 1347) serve? The DISPLAY BACKUP Button forces the displays to enter reversionary mode, showing the flight instruments together with the engine instruments in the event of display failure. Refer to the System Overview in the Pilot's Guide for details. 4. Does COM MIC Key selection have any impact on the display of the COM frequencies on the PFD or MFD? Explain. Pressing a COM MIC Key changes the corresponding active frequency to green. Note that the active COM1 and COM2 frequencies in the COM Frequency Box can be green simultaneously only when Split COM function is selected (i.e., when COM1/2, COM1 MIC, and COM2 MIC are annunciated on the Audio Panel). 5. Two pilots on a long cross-country flight encounter bad weather. The pilot flying the plane wants a weather update, but is struggling to get on frequency and be heard because the ARTCC frequency is very busy handling multiple reroutes. What tools are available to get the necessary weather information to continue the flight? Stormscope or datalink weather information may be available, although the most useful tool is the other pilot. By using the split com function, the ARTCC frequency can be monitored on COM1 while the other pilot can contacts Flightwatch or the Flight Service Station on COM2. 190-00368-05 Rev. B GIFD Pilot's Training Guide 17