TM 55-1510-215-MTF
E17. Gas generator overspeed.
a.
Defective turbine tachometer system.
b. Sheared or worn fuel control unit splined coupling or
drive spline.
c.
Defective fuel control unit.
E18. Gas generator uncontrolled acceleration.
a. Sheared or worn fuel control unit splined coupling or
drive spline.
b.
Defective fuel control unit.
E19. Surge during acceleration.
a.
Defective compressor bleed valve.
b.
Defective fuel control unit.
c.
Compressor damaged.
E20. Slow to accelerate.
a.
Leak or restriction in fuel control unit sense tubes.
b.
Fuel control contaminated with ice or corrosion.
c.
Defective fuel control unit.
E21. Flame out.
a.
Fuel supply contaminated with ice, water or debris.
b.
Engine driven high pressure fuel pump.
c.
Fuel control unit contaminated or corroded.
d.
Manifold adapter or fuel nozzles restricted.
3-24