PASSENGER SERVICE UNITS
ATTENDANT STATIONS O2G
O2G LAVATORIESFWD GALLEY
SERVICE
UNITS (2 MASKS) (4 MASKS)
CONDITION: NORMAL HIGH PRESSURE CHEMICAL OXYGEN GENERATOR O2G (IN EACH SERVICE UNIT) LOW PRESSURE
Copyright . The Boeing Company. See title page for details.
September 26, 2003 1.40.13
Airplane General, Emergency Equipment, Doors, Windows -Systems Description
737 Flight Crew Operations Manual
YA626, YA801 - YA809, YC411 - YK104
YA801 - YA809
OXYGEN MASK (TYPICAL)
PRESSURE
REDUCER
THERMAL
DISCHARGE
CREW PORT
CREW OXYGEN NORMAL PASS OXYGEN CYLINDER OXYGEN
5 10 15 ON
0 20
PS1 X 100 OXY PRESS PASS OXY ON BAROMETRIC 14,000 FT
PRESSURE
SWITCH
PASSENGER SERVICE UNITS
ATTENDANT STATIONS O2G
O2G LAVATORIES
SERVICE
UNITS (2 MASKS) (4 MASKS)
CONDITION: NORMAL HIGH PRESSURE CHEMICAL OXYGEN GENERATOR O2G (IN EACH SERVICE UNIT) LOW PRESSURE
Copyright . The Boeing Company. See title page for details.
1.40.14 June 1, 2005
Airplane General, Emergency Equipment, Doors, Windows -Systems Description
737 Flight Crew Operations Manual
YA626, YC411 - YK104
OXYGEN MASK (TYPICAL)
PRESSURE
REDUCER
THERMAL
DISCHARGE
CREW PORT
CREW OXYGEN NORMAL PASS OXYGEN CYLINDER OXYGEN
5 10 15 ON
0 20
PS1 X 100 OXY PRESS PASS OXY ON BAROMETRIC 14,000 FT
PRESSURE
SWITCH
PASSENGER SERVICE UNITS
ATTENDANT STATIONS O2G
O2G LAVATORIES/FWD GALLEY
SERVICE
UNITS (2 MASKS) (4 MASKS)
CONDITION: NORMAL HIGH PRESSURE CHEMICAL OXYGEN GENERATOR O2G (IN EACH SERVICE UNIT) LOW PRESSURE
Copyright . The Boeing Company. See title page for details.
June 1, 2005 1.40.15
Airplane General, Emergency Equipment, Doors, Windows -Systems Description 737 Flight Crew Operations Manual
Flight Crew Oxygen System
YA721 - YC154 The flight crew oxygen system uses quick-donning, diluter-demand masks/ regulators located at each crew station. Oxygen is supplied by a single cylinder. Oxygen pressure is displayed on the Oxygen Pressure indicator located on the aft overhead panel when the battery switch is ON. Oxygen flow is controlled through an in-line, pressure-reducing regulator to supply low-pressure oxygen to the regulator on the mask. System pressure may be as high as 1850 psi.
YA613 - YA687, YC411 - YK104 The flight crew oxygen system uses automatic pressure-breathing masks/ regulators located at each crew station. Pressure breathing occurs above 27,000 feet. Oxygen is supplied by a single cylinder. Oxygen pressure is displayed on the indicator located on the aft overhead panel. Oxygen flow is controlled through a pressure-reducing regulator to supply low-pressure oxygen. System pressure may be as high as 1850 psi.
Oxygen flow is controlled by a regulator mounted on the oxygen mask. By pushing the NORMAL/100% control lever, the regulator is adjusted from the air/oxygen mixture to 100% oxygen. By rotating the EMERGENCY/PUSH TO TEST selector, the regulator is adjusted to supply oxygen under pressure.
Flight Crew Oxygen Mask Usage
Donning Instructions YA626, YA801 - YA809, YC411 - YK104
To don the mask, grasp the regulator with the thumb and forefinger and remove from stowage. Squeezing the inflation levers and removing from the box:
.
inflates the mask harness
.
momentarily displays a colored oxygen flow indicator.
.
Place the mask over the head and release the levers. The harness contracts
to fit the mask to head and face.
The observer’s oxygen mask, regulator, and harness unit is the same as the pilots’.
Copyright . The Boeing Company. See title page for details.
1.40.16 September 29, 2005
Airplane General, Emergency
Equipment, Doors, Windows -Systems Description
737 Flight Crew Operations Manual
MASK DONNING
Donning Instructions YA613, YA686 - YA722, YC153, YC154
To don the oxygen mask accomplish the following:
.
Grasp the regulator by the red inflation levers with the hand nearest the stowage box.
.
Squeeze the inflation levers while pulling the mask from the box.
.
Pull the mask across in front of you, toward the center of the airplane (to ensure ample hose extension) while rolling the mask face-up.
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