TM 55-1510-215-MTF
e.
Defective compressor bleed valve.
f.
Damaged compressor.
g.
Air leaks in engine flanges or fittings.
h.
Hot section distress.
i.
Torquemeter system reading low.
E26. Fluctuating torque indication.
a.
Faulty instrumentation system.
b.
Airframe resonance affecting control lever.
c.
Defective power turbine governor.
d.
Engine driven high pressure pump shaft seal leakage.
e.
Defective or out of adjustment propeller overspeed governor.
f.
Defective propeller primary governor.
g.
Sticking beta mechanism.
E27. Fluctuating fuel flow.
a. Faulty instrumentation system.
b. Airframe resonance affecting control lever.
c. Defective power turbine governor.
d. Engine driven high-pressure fuel pump shaft seal leaking.
e. Defective propeller overspeed governor.
f. Sticking beta mechanism.
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