Cessna 1980 182Q Pilot's Operating Handbook And Flight Manual page 208

5
OXYGEN SYSTEM
MODEL 182Q
PILOT'S OPERATING HANDBOOK
SUPPLEMENT
The Oxygen Duration Chart (figure 2) should be used in determining
the usable duration (in hours) of the oxygen supply in your airplane. The
following procedure outlines the method of finding the duration from the
chart.
1. Note the available oxygen pressure shown on the pressure gage.
2. Locate this pressure on the scale on the left side of the chart, then
go across the chart horizontally to the right until you intersect the
line representing the number of persons making the flight. After
intersecting the line, drop down vertically to the bottom of the
chart and read the duration in hours given on the scale.
3. As an example of the above procedure, 1400 psi of pressure will
safely sustain the pilot only for nearly 6 hours and 15 minutes. The
same pressure will sustain the pilot and three passengers for
approximately 2 hours and 30 minutes.
NOTE
The Oxygen Duration Chart is based on a standard config-
uration oxygen system having one orange color-coded
hose assembly for the pilot and green color-coded hoses for
the passengers. If orange color-coded hoses are provided
for pilot and passengers, it will be necessary to compute
new oxygen duration figures due to the greater consump-
tion of oxygen with these hoses. This is accomplished by
computing the total duration available to the pilot only
(from PILOT ONLY line on chart), then dividing this
duration by the number of persons (pilot and passengers)
using oxygen.
SECTION 2
LIMITATIONS
There is no change to the airplane limitations when oxygen equipment
is installed.
SECTION 3
EMERGENCY PROCEDURES
There is no change to the airplane emergency procedures when oxygen
equipment is installed.
4 1 October 1979