787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Communications -
System Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 5.20.5
Stuck Mic Protection
In the event a VHF or HF radio transmits for more than 30 seconds, the EICAS
advisory message RADIO TRANSMIT CAPT, F/O or OBS is displayed. The
message is removed when the transmission stops.
On the ground with both engines shut down, any radio that transmits for more than
35 seconds is automatically disabled and dashes (-------) appears in the TCP
frequency line for that radio. That radio is enabled when the microphone switch
for that radio is released.
Selective Calling (SELCAL) System
[Option - Dual HF]
The SELCAL system monitors the three VHF radios and the two HF radios. When
the system receives a call from a ground station, the crew is alerted through the
communication crew alerting system.
Satellite Communication (SATCOM) System
[Option - SATCOM]
A single SATCOM system provides both data and voice communications. The
system is managed by the satellite data unit. Flight deck voice calls are controlled
using the TCPs and audio control panels.
The SATCOM control pages are displayed by selecting SAT on the TCP.
Directories of airline-defined numbers are line-selectable or numbers may be
manually entered if function is enabled by the operator.
The SATCOM main menu pages allow the flight crew to initiate, answer and
terminate calls, monitor call status, and access lower-level pages. Control
functions are active when displayed with a caret (< or >).
Incoming SATCOM calls are annunciated by a SELCAL chime and illumination
of a CALL light on the audio control panel. Pressing the respective transmitter
select switch connects the call to the pilot headset/hand mic. Flight crews can
facilitate audio conferencing between the cabin and ground by selecting both the
CAB and SAT transmitter select switches on. (Refer to Cabin / SATCOM
Conferencing in Chapter SP, Section 5, for additional information.)
SATCOM calls are terminated when the CALL light extinguishes (ground party
hang-up or pilot ends call).
The EICAS communication message SATCOM CALL displays when a SATCOM
message requires flight crew attention. Servicing the message clears the EICAS
message.
February 15, 2010
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