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STROBE
LOWER
ILLUMINATION
BEACON
RUNWAY
TURNOFF
LEFT NAV
LIGHT
LIGHT
AND RIGHT
LIGHTS-LEFT
WING
LIGHTS-LEFT
LANDING
OUTBOARD
LIGHTS-LEFT
INBOARD AND
LIGHT
STROBE
LIGHTS
AND STROBE
NAVIGATION
WHITE
LIGHT
RIGHT NAV
AND RIGHT
ANTI-COLLISION
December 01, 1999
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
1.40.4 D6-30151-425
Airplane General, Emergency
Equipment, Doors,Windows -
Systems Description
FASTEN SEAT BELTS signs (AUTO selected):
• landing gear not up and locked or
• flap lever not up, or
• airplane altitude below 10,300 feet, or
• cabin altitude above 10,000 feet, or
• passenger oxygen on
NO SMOKING signs (AUTO selected):
• landing gear not up and locked, or
• cabin altitude above 10,000 feet, or
• passenger oxygen on.
All signs can be controlled manually by positioning the related selector to ON or
OFF. When the Fasten Seat Belts and No Smoking selectors are in OFF position,
and oxygen is ON, the FASTEN SEAT BELTS and NO SMOKING signs
illuminate.
RETURN TO SEAT signs illuminate with the FASTEN SEAT BELTS signs,
except when oxygen is deployed.
The memo message SEATBELTS ON displays when FASTEN SEAT BELTS
signs are manually selected ON.
The memo message NO SMOKING ON displays when NO SMOKING signs are
manually selected ON.
When FASTEN SEAT BELTS signs and NO SMOKING signs are both selected
ON, the memo message PASS SIGNS ON displays, and memo messages
SEATBELTS ON and NO SMOKING ON are inhibited.
When the cabin signs illuminate or extinguish, a low tone sounds over the PA
system.
Emergency Lighting
Interior emergency lighting consists of door, aisle, cross-aisle, escape path, and
exit lights, and luminescent exit signs.
Escape path lighting consists of floor mounted locator lights spaced at intervals in
the aisles, cross-aisles, and stairway.
Additional battery powered exit identifier lights are located at each cabin exit.
When illuminated, the escape path lighting provides visual guidance for
emergency evacuation if all sources of cabin lighting more than four feet above the
aisle floor are obscured by smoke.
Exterior emergency lighting consists of escape slide and overwing lights.
December 01, 1999
747 Operations Manual
Airplane General, Emergency
Equipment, Doors, Windows -
Systems Description
Copyright © The Boeing Company. See title page for details.
D6-30151-425 1.40.5
Emergency lighting is controlled by the Emergency Lights switch on the overhead
panel. The switch can be used to manually activate or arm the system for
automatic operation. Automatic operation occurs if DC power fails or is turned off
when the system is armed. The emergency lighting system can also be controlled
by the Emergency Lights switch on the 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 exterior fuselage light and the interior emergency lights at that door to
illuminate.
The emergency lighting system is powered by remote batteries. Battery charge is
maintained by DC bus 4. A fully charged battery provides at least 15 minutes of
operation.
December 01, 1999
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
1.40.6 D6-30151-425
Airplane General, Emergency
Equipment, Doors,Windows -
Systems Description
Interior Emergency Lighting Locations
All Emergency lights and EXIT signs are powered by remote NiCad batteries and
are controlled by the Emergency Lights switch.
1 Emergency Door Light
2 EXIT Signs
3 Emergency Cross Aisle Light
4 Emergency Aisle Lights
5 Emergency Escape Path Lighting
Exterior Emergency Lighting
External emergency lighting illuminates all escape slides, ramps, and overwing
areas.
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April 01, 2001
747 Operations Manual
　
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