Pilot's Guide

Garmin G1000 Pilot’s Guide for Tiger AG-5B190-00617-00 Rev. A
3-7
OPERATION – COM
EMERGENCY FREQUENCY (121.500 MHZ)
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 3-13 COM Tuning Failure
NOTE: In case of a dual display failure, the COM
radios are automatically tuned to the emergency
frequency (121.500 MHz).
QUICK-TUNING AND ACTIVATING 121.500 MHZ
Pressing and holding the COM Frequency Transfer
key for two seconds automatically loads the emergency
COM frequency (121.500 MHz) in the active field of the
active COM radio (the one with the transfer arrow).
Press for two seconds to load 121.5 MHz.
Figure 3-14 Quickly Tuning 121.500 MHz
STUCK MICROPHONE
If the COM1 or COM2 push-to-talk (PTT) switch be-
comes stuck, the COM transmitter times out after 35 sec-
onds of continuous transmitting. An alert appears on the
PFD to advise the crew of a stuck microphone.
Figure 3-15 Stuck Microphone Alert
190-00617-00_03A.indd 7 7/6/2005 2:11:57 PM