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TM 1-1510-223-MTF
e.
Defective propeller primary governor.
f.
Sticking beta mechanism.
E28.
Fluctuating torque and propeller RPM.
a.
Defective or out of adjustment propeller overspeed
governor.
b.
Defective propeller primary governor.
c.
Sticking beta mechanism.
E29.
Fuel leaking overboard.
a.
Fuel cap not seated and anti-siphon valve defective.
b.
Filler cap or preformed packing defective and anti-siphon
valve defective.
c.
Fuel transfer module defective.
d.
Fuel level transmitter defective.
TROUBLESHOOTING GUIDE F PROPELLERS
CONDITION
PROBABLE CAUSE
F1.
Propeller governor
system
partially
or
completely
inoperative.
Defective propeller governor test switch.
F2.
Propeller governor test system inoperative.
a.
Tripped propeller governor test circuit breaker.
b.
Defective wiring.
c.
Defective switch.
d.
F3.
Propeller governor test system inoperative on one
engine.
a.
Defective PROP GOVERNOR test switch.
b.
3-21
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