TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
(c)
Repeat procedure for right engine.
* 6.
Engine high idle speed - Check 71 to
73% N1.
E2
* 7.
N1 speed switch (air conditioning) -
check as follows:
(a)
Right engine CONDITION lever -
LOW IDLE.
(b)
Right
engine
PROP
lever
-
FEATHER.
(c)
CABIN AIR MODE SELECT switch -
MANUAL COOL.
(d)
Verify that AIR COND N1 LOW
annunciator light is illuminated.
(e)
Right engine CONDITION lever -
Advance to increase N1 to above
62%.
(f)
Verify that AIR COND N1 LOW
annunciator light is extinguished
with N1 above 62%.
(g)
CABIN AIR MODE SELECT switch -
AUTO.
* 8.
Pneumatic/vacuum/pressurization
-
Check as follows:
(a)
PNEUMATIC
PRESSURE
gage/
GYRO SUCTION gage - Check in
green arcs.
(b)
CABIN ALT controller - Set 500 feet
lower than field pressure altitude.
(c)
Cabin pressurization RATE control -
Set to maximum.
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