King Air C90GTi, Pilot Training Manual

Page: 473 / 557

The oxygen system (Figure 17-1) provides
an adequate flow for an altitude of 30,000
feet. The masks and Oxygen Duration chart
(Normal Procedures section of the
POH ) are
based on 3.7 LPM-NTPD. The only excep-
tion is the diluter-demand crew mask when
used in the 100% mode. For oxygen duration
c o m p u t a t i o n , e a c h d i l u t e r- d e m a n d m a s k
being used in the 100% mode is counted as
two masks at 3.7 LPM-NTPD each.
KING AIR C90GTi/C90GTx PILOT TRAINING MANUAL
17-2
FOR TRAINING PURPOSES ONLY
17
OXYGEN
SY
STEM
LEGEND
HIGH PRESSURE LINES
LOW PRESSURE LINES
PRESSURE GAGE
CREW MASKS
OUTLET FOR COPILOT
DILUTER DEMAND
MASK INSTALLATION
CABIN OUTLETS
PUSH-PULL
CONTROL
FILLER VALVE
SUPPLY PRESSURE GAGE
NOTES:
AVIATORS BREATHING
OXYGEN KEEP FILL
AREA CLEAN, DRY &
FREE FROM OIL
PRESSURIZED TO
___* PSI @ 14.7 PSI & 70
O
F
* 1800 WHEN 22 CU FT
CYLINDER IS USED.
1850 WHEN 49 OR 66
CU FT CYLINDER
IS USED
PRESSURE REGULATOR
AND SHUTOFF VALVE
CYLINDER
AFT PRESSURE
BULKHEAD
CREW MASKS
OXYGEN SHUTOFF
CONTROL
PULL-ON
NOTE:
CONSTANT FLOW PASSENGER
MASKS ARE STORED IN
SEAT-BACK POCKETS
CABIN OUTLETS
OUTLET, AFT COMPARTMENT
(OPTIONAL)
FORWARD PRESSURE
BULKHEAD
Figure 17-1. Oxygen System Schematic