Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 762

SECTION 9 - SUPPLEMENTS CESSNA
SUPPLEMENT 6 MODEL 208B 867 SHP
GARMIN G1000
OXYGEN SYSTEM
GENERAL
The oxygen system provides supplemental oxygen necessary for
continuous flight at high altitude. The oxygen system contains two ports
in the cockpit with either an extra 8 (10 total) or extra 15 (17 total) in the
cabin.
The small capacity oxygen cylinder of 51 cubic foot supplies oxygen to
the two-port system. The larger capacity oxygen cylinder of 117 cubic
foot supplies oxygen to the 10-port or 17-port system. The oxygen
cylinder is located in the fuselage tailcone. Cylinder pressure is
reduced to an operating pressure of 70 PSI by a pressure regulator
attached to the cylinder. A shutoff valve is included as part of the
regulator assembly. The system also contains an altitude compensating
regulator located between the pressure regulator and the oxygen
supply lines, which varies the flow of oxygen to the masks, depending
on altitude. An oxygen cylinder filler valve is located on the right side of
the airplane (under a cover plate), at the forward end of the tailcone.
Cylinder pressure is indicated by a pressure gage located on the
overhead console above the pilot's and copilot's seats. Two oxygen
outlets are provided in the cabin ceiling, one each just outboard of the
pilot's and copilot's seats. Two permanent microphone-equipped masks
are provided for the pilot and copilot. Both masks are the partial
rebreathing type equipped with vinyl plastic hoses and flow indicators.
The oxygen hoses are the high-flow type and are color coded with a
blue band adjacent to the plug-in fitting.
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FAA APPROVED
208BPHCUS-S6-00
U.S.
S6-4