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 TM 55-1510-218-MTF
F13.
One arm light remains illuminated after torque
of one engine falls below 7% on retarded engine,
AUTOFEATHER ARM-TEST switch in TEST
position).
a. Defective No. 2 (6.5 PSI) torque pressure
switch on retarded engine.
b. Defective autofeather dump valve.
F14.
Propeller slow to feather.
a. Preformed packing leak at transfer tube or
transfer housing.
b. Defective propeller governor.
F15.
Propeller slow to unfeather.
a. Defective propeller governor.
3-26
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