787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Communications -
Interphone Systems
Copyright © The Boeing Company. See title page for details.
5.30.2 D615Z003-TBC
Passenger Address System
The passenger address (PA) system is used by the flight crew to make cabin
announcements. Pushing a PA mic switch on an audio control panel provides
direct access to all PA areas.
The system is monitored by pushing the PA receiver volume control on an audio
control panel. The PA system can also be selected through the cabin interphone
system or the flight deck handset.
Cabin PA announcement priorities are:
• flight deck announcements from an audio control panel
• priority (all area) announcements
• normal announcements from flight attendant or flight deck handsets
Cabin Interphone System
The cabin interphone system provides voice communications between the flight
deck and the flight attendant stations. Boom microphones, oxygen mask
microphones, and hand microphones are used by selecting the CAB (cabin)
transmitter select switch on an audio control panel and pushing the mic/interphone
switch to the MIC position. A cabin interphone station(s) must be selected and a
call initiated from the TCP CABIN INTERPHONE page to alert the desired
station to pick up the call.
EICAS communications alert messages and chimes alert the pilots to incoming
cabin calls. Normal priority calls from the cabin display the CABIN CALL
EICAS message. Normal priority calls made to the flight deck while another call
is in progress results in a busy signal at the handset, the calling station being
displayed in the call queue, and the CABIN CALL memo message being set in
EICAS. The call queue and memo messages are cleared when communication is
established between that calling station and the flight deck. Priority calls from the
cabin display the CABIN ALERT EICAS message. Priority calls automatically
disconnect lower priority cabin interphone calls. Priority calls placed while a
priority call is in progress are automatically connected as a conference call.
The cabin interphone call queue, speed dial numbers, and directories are accessed
from the TCP CABIN INTERPHONE page menu.
Calls are initiated by:
• line selecting a one of three predefined SPEED DIAL locations on the
CABIN INTERPHONE page, or
• accessing the DIRECTORY menu, selecting the appropriate subdirectory
and then selecting the desired call location(s), or
• manually entering a valid two digit dial code in the scratchpad and
selecting MAKE CALL
August 14, 2009
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