TWIN COMANCHE C/R
A. OXYGEN SYSTEM INSTALLATION
1. LIMITATIONS
No smoking while the oxygen system is in use.
?
i.
PROCEDURES
a. Check pressure gauge in rear of cabin for sufficient pressure for anticipated
requirements for flight. Full system pressure is approximately 1850 PSIG. If necessary recharge
cylinder.
b.
When oxygen is desired pull out control cable knob placing regulator in “ON” position.
C.
At seating positions where oxygen is to be used plug mask assembly into oxygen
outlet, turn clockwise 90” and apply mask to face.
d. The flow indicator located in the mask assembly oxygen line should be checked. When
red indicator disappears the oxygen is flowing through the line normally.
e. To stop flow of oxygen push in control cable knob placing regulator in “OFF”
position and remove mask from face.
f. Leave mask assembly connected to oxygen outlet for at least 3 minutes to completely
bleed down low pressure lines.
3.
PLACARDS
a. At each oxygen outlet:
NO SMOKING WITH OXYGEN IN USE
b. At the oxygen control knob:
?i; PULL ON, OXYGEN
4. EMERGENCY
In the event that during operation the red indicator appears in any of the flow indicators,
the aircraft should be lowered to a safe altitude immediately.
FAA APPROVED November 28,1969
REISSUED: June 1,197O
REPORT: 1605 PART I PAGE 2 1
MODEL. PA-39
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