TM 55-1510-221-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
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
i.
Cabin climb indicator Check for descent
indication within
2-31
