787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Communications -
System Description
Copyright © The Boeing Company. See title page for details.
5.20.2 D615Z003-TBC
Cockpit Voice Recorder System
The cockpit voice recorder records any transmitted or received flight deck audio
as selected on the audio control panels. It also records flight deck area
conversations using an area microphone. All inputs are recorded continuously.
Tuning and Control Panels
[Option - HF, SATCOM]
The tuning and control panels (TCP) are used to tune and control the VHF, HF,
SATCOM, cabin interphone, and other airplane systems. The panels are
designated left, center, and right, and are normally associated with the respective
VHF and HF radios.
Each TCP has a light sensor to automatically control display lighting. Lighting
levels for all TCPs can be adjusted using aisle stand panel or master brightness
controls.
Communication Indications
The TCP enables the flight crew to share a display between multiple
communication control functions. Therefore, each flight data block provides
onside microphone source, frequency, SELCAL and transponder code settings for
continuous pilot reference.
Radio Communication Systems
[Option - HF, SATCOM]
The radio communication systems consist of the very high frequency (VHF)
communication system, the high frequency (HF) communication system, the
satellite communication (SATCOM) system, and the selective calling (SELCAL)
system.
VHF Communication System
Three independent VHF voice/data radios, designated VHF L (left), VHF C
(center), and VHF R (right) are installed. Any VHF radio can be controlled by any
TCP. The audio control panels are used to control voice transmission and receiver
monitoring.
When a VHF radio is tuned to frequency 121.5, all flight crew automatically
monitor the radio. The receiver lights on all audio control panels illuminate.
VHF L is configured for voice communication only and VHF C is normally used
for data communication. VHF C and VHF R can be used for both voice or data
communication. However, only one VHF radio can operate in the data mode at a
time. ------- - X - ------- is displayed on the TCP when the affected radio (X) is
inoperative.
June 16, 2008
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