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Airplane General, Emergency
Equipment, Doors, Windows -
Systems Description
Copyright © The Boeing Company. See title page for details.
D6-30151-425 1.40.7
Exterior Emergency Lighting Locations
ESCAPE SLIDE
OFF-WING
RAMP
OVERWING
ILLUMINATED
EXTERNAL AREA
ESCAPE SLIDE
UPPER DECK
ESCAPE SLIDE
UPPER DECK
LIGHTING
EMERGENCY
EXTERIOR
(8 PLACES)
SLIDE/RAFT
ESCAPE
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
1.40.8 D6-30151-425
Airplane General, Emergency
Equipment, Doors,Windows -
Systems Description
Oxygen Systems
Two independent oxygen systems are provided, one for the flight crew and one for
the passengers. Portable oxygen cylinders are located in the passenger cabin for
emergency use.
Oxygen pressure displays on the EICAS STATUS page.
Flight Crew Oxygen System
The flight crew oxygen system uses quick–donning diluter-demand masks located
at each crew station. Oxygen flow is controlled by a regulator mounted on each
mask.
During the preflight check of the crew oxygen mask, a drop of 30 psi or greater
for each mask tested indicates the crew oxygen cylinder shutoff valve may be
closed, and oxygen is unavailable.
Squeezing the red release levers with the thumb and forefinger allows the mask to
be removed from stowage, inflates the mask harness and momentarily displays the
yellow cross in the flow indicator. Releasing the levers after placing the mask over
the head deflates the mask harness, fitting it securely to the head and face.
When the left-hand door to the mask stowage box is opened, the mask microphone
activates in the removed mask and the First Observer’s mask.
An OXYGEN ON flag appears in the mask compartment near the left-hand door
of the stowage box, indicating the oxygen supply valve is open. The oxygen
system is shut off by closing the left-hand door of the stowage box and pushing
and releasing the RESET/TEST slide lever. This action shuts off oxygen to the
mask, stows the flag, deactivates the mask microphone, and activates the boom
microphone. The oxygen system can be reactivated by opening the left-hand door
of the stowage box.
Passenger Oxygen System
The passenger oxygen system is supplied by bottled gaseous oxygen. The oxygen
bottles provide oxygen to the passenger, attendant station, and lavatory service
units. The passenger oxygen masks are located above the passenger seats in
passenger service units (PSUs). The masks automatically drop from the PSUs if
cabin altitude exceeds approximately 14,000 feet. Passenger oxygen masks can be
manually deployed from the flight deck by positioning the overhead panel
Passenger Oxygen switch to ON position.
Oxygen flow to a mask begins when the mask is pulled down.
Oxygen flow can be reset by selecting the Passenger Oxygen switch to RESET
position.
Passenger oxygen pressure displays on the EICASSTATUS page.
April 01, 2001
747 Operations Manual
Airplane General, Emergency
Equipment, Doors, Windows -
Systems Description
Copyright © The Boeing Company. See title page for details.
D6-30151-425 1.40.9
Portable Oxygen Bottles
Portable oxygen bottles are stowed in various locations in the passenger cabin.
The bottles are fitted with disposable masks and are used for first aid purposes or
as walk–around units. All bottles are identical in size and capacity.
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
1.40.10 D6-30151-425
Airplane General, Emergency
Equipment, Doors,Windows -
Systems Description
Intentionally
Blank
April 01, 2001
747 Operations Manual
Airplane General, Emergency Chapter 1
Equipment, Doors, Windows
Systems Description Section 45
Copyright © The Boeing Company. See title page for details.
D6-30151-425 1.45.1
Emergency Equipment
Emergency equipment described in this chapter includes:
Fire Extinguishers
Water and Halon fire extinguishers are located throughout the passenger cabin.
Water Fire Extinguishers
Water fire extinguishers contain a solution of water mixed with antifreeze. Water
fire extinguishers are to be used on fabric or paper fires only. They are not to be
used on electrical or grease fires.
To use the water fire extinguisher, remove it from stowage and rotate the handle
fully clockwise. Aim the nozzle at the base of the fire and press the trigger.
CAUTION: Antifreeze compound has been added to the water which
makes it unfit for drinking.
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