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Oxygen Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
LEVEL FLIGHT AT CABIN PRESSURE ALTITUDE OF 8,000 FEET <1033>
Crew members 2 3
Initial Bottle Pressure 1400 psi 1850 psi 1400 psi 1850 psi
Normal Mask Setting 2h 48’ 3h 47’ 1h 52’ 2h 32’
100% Mask Setting 0h 38’ 0h 51’ 0h 25’ 0h 34’
Emergency Mask Setting 0h 35’ 0h 48’ 0h 24’ 0h 32’
DESCENT (10 Min.) FROM 41,000 feet TO LEVEL FLIGHT AT SAFE ALTITUDE <1033>
(100% MASK SETTING FOR DESCENT AND NORMAL MASK SETTING FOR LEVEL FLIGHT)
Crew members 2 3
Initial Bottle Pressure 1400 psi 1850 psi 1400 psi 1850 psi
C bi
10,000 Feet 3h 13’ 4h 25’ 2h 04’ 2h 52’
Cabin
Pressure 14,000 Feet 3h 08’ 4h 16’ 2h 02’ 2h 48’
Altitude 18,000 Feet 2h 43’ 3h 31’ 1h 47’ 2h 27’
21,000 Feet 2h 16’ 2h 59’ 1h 31’ 2h 03’
DESCENT (10 Min.) FROM 41,000 feet TO LEVEL FLIGHT AT SAFE ALTITUDE <1033>
(100% MASK SETTING FOR BOTH DESCENT AND LEVEL FLIGHT)
Crew members 2 3
Initial Bottle Pressure 1400 psi 1850 psi 1400 psi 1850 psi
Cabi
10,000 Feet 0h 47’ 1h 02’ 0h 33’ 0h 43’
Cabin
Pressure 14,000 Feet 0h 53’ 1h 11’ 0h 37’ 0h 49’
Altitude 18,000 Feet 1h 03’ 1h 24’ 0h 43’ 0h 57’
21,000 Feet 1h 11’ 1h 35’ 0h 48’ 1h 05’
Vol. 1 09--20--12
EMERGENCY EQUIPMENT
Oxygen REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
F. Passenger Oxygen System
The passenger oxygen system provides chemically generated oxygen for all cabin
occupants in the event of cabin depressurization.
The oxygen generators and oxygen masks are installed as part of the passenger
service unit panel and are available at all passenger seats, in the lavatories and at the
flight attendant stations.
All oxygen compartment doors will open to present the oxygen masks automatically if
cabin altitude reaches 14,500 ±500 feet.
If the automatic system fails to open the doors, or if it is necessary to override the
automatic system, the flight crew can operate the (guarded) PASS OXY switchlight on
the overhead panel to open the oxygen doors in the passenger service units. As a
back-up to electrically opening the doors, each individual oxygen compartment door
can be opened manually through a release hole in the door.
When the oxygen compartment doors are open, the passengers will pull the oxygen
mask to their face, which pulls a lanyard connected to the firing pin of the chemical
oxygen generator. This initiates the flow of oxygen to the passenger’s oxygen mask. A
flow indicator in the supply tube will show green when oxygen is flowing. The reservoir
bags on the passenger oxygen masks begins to fill with oxygen. The chemical oxygen
generator supplies approximately 22 minutes of oxygen to each mask.<1071>
WARNING
The oxygen generator surface temperaturemay reach
260 _C (500 _F) when generating oxygen. Do not
touch or attempt to remove generator. Burn injury can
result. If an active generator is inadvertently removed
from the compartment, the generator must be placed
in a metal container such as a lavatory or galley sink.
The generator’s heat will scorch other materials or
fabrics.
NOTE
Odor similar to scorched cloth may be created by activation of
generator. The odor does not affect the purity of the oxygen
supply and there is no fire hazard.
Vol. 1 09--20--13
EMERGENCY EQUIPMENT
Oxygen REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Passenger Oxygen System
Figure 09---20---7
PASS OXY
Overhead Panel
Passenger Service Unit
CHEMICAL OXYGEN
GENERATOR
DOOR
OPEN
TEST
LATCH
PASSENGER
MASKS
LANYARD
MASK
CONTAINER
ON
PASS OXY (Guarded)
Used when passenger oxygen
system auto--deployment has
failed or to override the
auto--deployment system.
ON (white) light indicates that
oxygen system has deployed.
Vol. 1 09--20--14
EMERGENCY EQUIPMENT
Oxygen REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
G. Portable Oxygen System
The portable oxygen system is available to supply oxygen to the crew or the
passengers during an emergency.
The portable oxygen bottles are provided, as protective breathing units, to be used for
protection against smoke and harmful gases. In addition, the portable oxygen bottles
can also be used for first aid purposes.
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