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provides portable full-face and respiratory protection from hazardous smoke,
fumes, or other emergency situations.
For constant flow oxygen, a bayonet-type fitting accommodates a disposable
continuous flow mask. The cylinder provides oxygen for a duration of
approximately 103 minutes using the 3 liter constant flow outlet.
FLIGHT CREW PORTABLE OXYGEN
AIRCRAFT GENERAL
Sec. 6.1 Page 82 737
Rev. 11/15/02 #41 Continental Flight Manual
INTENTIONALLY LEFT BLANK
AIRCRAFT GENERAL
737 Sec. 6.1 Page 83
Flight Manual Continental Rev. 11/15/02 #41
CONTROLS AND INDICATORS
OXYGEN
< Flight Crew Oxygen Pressure Indicator
· Indicates pressure at the crew oxygen cylinder.
= Passenger Oxygen Switch
NORMAL – Passenger oxygen will be activated automatically.
· A mask drops in front of each passenger if cabin altitude climbs to
14,000 feet.
ON – Activates the system and drops masks if the automatic function fails to
lower masks.
> Passenger Oxygen On Light (Amber)
· Illuminated – System activated.
< Flight Crew Oxygen Shutoff Valve
Turns Counterclockwise – Allows oxygen to flow.
Turn Clockwise – Shuts off oxygen flow.
AIRCRAFT GENERAL
Sec. 6.1 Page 84 737
Rev. 11/15/02 #41 Continental Flight Manual
>>@ OXYGEN MASK PANEL
< Oxygen Flow Indicator
Indicates a yellow cross when oxygen is flowing.
= RESET / TEST Slide Lever
Push –
· If mask is stowed, activates oxygen flow momentarily to test regulator.
· If mask is not stowed and stowage box doors are closed, retracts OXY
ON flag, shuts off oxygen, and shuts off microphone.
> Inflation Levers
Squeeze and pull up –
· Releases mask from stowage box
· Releases OXY ON flag when stowage box doors open
· Activates oxygen and microphone
· Inflates mask harness when inflation lever is squeezed
· Flow indicator shows a yellow cross momentarily as harness inflates.
AIRCRAFT GENERAL
737 Sec. 6.1 Page 85
Flight Manual Continental Rev. 11/15/02 #41
>>@ OXYGEN MASK AND REGULATOR
< NORMAL / 100% Switch
N (normal) – supplies air / oxygen mixture on demand (ratio depends on
cabin altitude).
100% – Supplies 100% oxygen on demand.
= Oxygen Mask EMERGENCY / Test Selector (rotary)
Rotate – Supplies 100% oxygen under positive pressure at all cabin
altitudes.
PRESS TO TEST – Tests positive pressure supply to regulator.
> Smoke Vent Valve Selector
Up – Vent valve closed.
Down – Vent valve open, allowing oxygen flow to smoke goggles.
AIRCRAFT GENERAL
Sec. 6.1 Page 86 737
Rev. 11/15/02 #41 Continental Flight Manual
>>@ FLIGHT CREW OXYGEN MASK USAGE
Donning Instructions
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’.
MASK DONNING
AIRCRAFT GENERAL
737 Sec. 6.1 Page 87
Flight Manual Continental Rev. 11/15/02 #41
SMOKE GOGGLES
These goggles are provided for use by the flight crew when smoke or fumes are
prevalent in the control cabin.
The Captain’s and First Officer’s goggles are stowed on their respective
sidewalls directly below their handsets.
Place smoke goggles on head. Pull upper tube of harness and reposition it over
the lower side of goggles frames. Push goggles downward.
Push the N-100% regulator control into the 100% position and rotate the PRESS TO
TEST control knob (counter-clockwise) into EMERGENCY position.
AIRCRAFT GENERAL
Sec. 6.1 Page 88 737
Rev. 11/15/02 #41 Continental Flight Manual
Open vent valve so that red bands are visible. This allows oxygen under
positive pressure to clear the goggles and keep them clear.
AIRCRAFT GENERAL
737 Sec. 6.1 Page 89
Flight Manual Continental Rev. 11/15/02 #41
BCD OXYGEN MASK PANEL
< Oxygen Flow Indicator
Indicates a yellow cross when oxygen is flowing.
= PRESS TO TEST AND RESET Slide Lever
Push –
· If mask is stowed, activates oxygen flow momentarily to test regulator
· If mask is not stowed and stowage box doors are closed, retracts OXY
ON flag, shuts off oxygen, and shuts off microphone.
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