Cessna 402C Pilot Operating Handbook page 251

r'~402C
MODEL
SECTION 7
AIRPLANE & SYSTEMS DESCRIPTIONS
The oxygen system is activated by pUlling the oxygen control knob, see·
Figure 7-1, to the ON position, allowing oxygen to flow from the regulator
to all cabin outlets. A normally closed valve in each oxygen outlet ;s
opened by inserting the connector of the mask and hose assembly. After
flights using oxygen. the pilot should insure that the oxygen system has
been deactivated by unplugging all masks and pushing the oxygen control
knob completely to the OFF position.
r--------NOTE---------.
If the oxygen control knob is left in an interme-
diate position between ON and OFF,
it
may allow low
pressure oxygen to bleed through the regulator into
the nose compartment of the airplane.
COCKPIT OXYGEN OUTLETS
ARMREST.
OXYGEN MASK STOWAGE
COMPARTMENT
-
-
HEADPHONE JACK
PILOT'S SIDE SHOWN; IDENTICAL CONTROLS ARE PROVIDED
FOR THE COPILOT.
Fi9ure 7-25
1 November 1979
7-47