TM 55-1510-219-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
and L&R BL AIR FAIL lights off, and
pneumatic pressure at 12 to 20 PSI.
j. Right bleed air valve switch -OPEN.
k. Right bleed air off light - Check
extinguished.
*10. Pressurization system - Check as follows:
a. Condition levers - HIGH IDLE.
b. Bleed air valve switches (2) -PNEU AND
ENVIRO OFF.
c. Pneumatic pressure gage - Check.
Pressure should drop to zero.
d.
Bleed
air
warning
lights
-Check
illuminated.
NOTE
Setting either bleed air valve switch to the PNEU AND
ENVIRO OFF position will cause the bleed air warning lights
to extinguish.
e. Cabin altitude controller - Set 500 feet
lower than field elevation.
f. Cabin pressurization rate control - Set to
maximum.
g. Cabin pressurization switch -TEST
(hold).
h. Left bleed air control valve switch -
OPEN.
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