Pilot's Guide

190-00494-04 Rev. A
Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang
141
AUDIO PANEL AND CNS
PASSENGER ADDRESS (PA) SYSTEM
A passenger address system is provided by pressing the PA Key to deliver messages to the passengers. The
message is heard by the other pilot on the headset only if the INTR COM Key is enabled. PA messages are one
way from the flight deck to the passengers.
A Push-to-talk (PTT) must be pressed to deliver PA announcements. The announcements are heard over the
cockpit speakers and by the passengers over their headphones.
When PA is selected on the Audio Panel, the annunciator flashes about once per second while pressing the
PTT,theCOMMICannunciatorisnolongerlit,andtheactiveCOMfrequencyforthatAudioPanelchangesto
white, indicating that there is no COM selected.
Figure 4-53 PA Key Selected for Cabin Announcements
PA Key is Selected on
the Audio Panel
SIMULTANEOUS COM OPERATION
NOTE: If the selected COM1 and COM2 frequencies are within approximately 1 MHz of each other,
interference may be heard during transmission on the other radio. Simultaneous COM operation is affected
by the distance between the COM antennas and the separation of the tuned frequencies.
Both the pilot and the copilot can transmit and receive simultaneously over separate COM radios.  The
selectedCOMMICAnnunciatorasheswheneitherpilot’smicrophonePTTispressed.
IfbothpilotsselectthesameCOMradio,thepilothaspriorityonCOM1andthecopilothaspriorityon
COM2.