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 TM 55-1510-218-MTF
E24. Fluctuating torque indication.
a. Faulty instrumentation system.
b. Defective power turbine governor.
c. Engine driven high pressure pump shaft seal
leakage.
d. Defective or out of adjustment propeller
overspeed governor.
e. Defective propeller primary governor.
f. Sticking beta mechanism.
E25. Fluctuating fuel flow.
a. Faulty instrumentation system.
b. Defective power turbine governor.
c. Engine driven high pressure fuel pump shaft
seal leaking.
d. Defective propeller overspeed governor.
e. Sticking beta mechanism.
E26. Fluctuating TGT.
a. Faulty instrumentation system.
b. Defective power turbine governor.
c. Defective engine driven high pressure fuel
pump shaft seal.
d. Defective or out of adjustment propeller
overspeed governor.
e. Defective propeller primary governor.
f. Sticking beta mechanism.
E27. Fluctuating gas generator speed.
a. Faulty instrumentation system.
b. Defective power turbine governor.
c. Defective engine driven primary high pres-
sure fuel pump shaft seal.
d. Defective or out of adjustment propeller
overspeed governor.
3-22
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