787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Airplane General, Emergency
Equipment, Doors, Windows -
Systems Description
Copyright © The Boeing Company. See title page for details.
1.40.6 D615Z003-TBC
• cabin altitude above 10,000 feet, or
• passenger oxygen on
The fasten seat belt signs can be controlled manually by positioning the SEAT
BELT SIGNS selector to ON or OFF. When the SEAT BELT SIGNS selector is in
the OFF position, and oxygen is ON, the fasten seat belt signs illuminate.
Return to seat signs are illuminated with the fasten seat belt signs, except when
oxygen is deployed.
When the fasten seat belt signs illuminate or extinguish, a low tone sounds over
the PA system.
The no smoking signs are permanently illuminated.
Emergency Lighting
The emergency lighting system is powered by remote batteries. Battery charge is
maintained by the airplane electrical system. A fully charged battery provides at
least 10 minutes of operation.
Emergency lighting is controlled by the emergency lights (EMER LIGHTS)
switch on the overhead panel. The switch can be used to manually activate or arm
the system for automatic operation. The system monitors airplane power and
automatic operation occurs when required power fails or is turned off with the
system armed. The emergency lighting system can also be activated by the EMER
LIGHTS switch on a main flight attendant switch panel.
When the emergency lights switch in the flight deck is armed, and the door mode
select lever is in the armed position, moving the door handle to the open position
causes the interior emergency lights at that door to illuminate.
The EICAS advisory message EMER LIGHTS is displayed when:
• the emergency lights switch is not in the ARMED position, or
• the emergency lights are on
February 13, 2009
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