190-00728-04 Rev. A
Embraer Prodigy® Flight Deck 100 Pilot’s Guide
162
AUDIO PANEL AND CNS
PASSENGER ADDRESS (PA) SYSTEM
A passenger address system is provided by pressing the PA Key to deliver messages to the headsets of the
passengers (if installed). The message is heard by the other pilot on the headset only if the PA Key is enabled
on both audio panels. PA messages are one way from the flight deck to the passengers.
A Push-to-talk (PTT) must be pressed to deliver PA announcements to 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 4-51 PA Key Selected for Cabin Announcements
PA Key is Selected on
the Audio Panel
SIMULTANEOUS COM OPERATION
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.