TM 55-2840-231-23
Table 1-8. Sympton Index (METS) - Continued
Troubleshooting
Procedure
Starting
Starter Unable to Rotate Engine Immediately After Shutdown
Slow Engine Response While in Flight
Slow to Accelerate From Idle to Power Speed
Speed
Engine Instability Above Idle Speed
Engine Speed Cycles at Idle
Idle Speed Too High
Idle Speed too Low
Stalls
Compressor Stall During Acceleration
Compressor Stall During Low Power Operation
Compressor Stall During Starting or Near Idle Speed (Refer to TM 55-1520-
214-10 or TM 55-1520-228-10 For Stall Definition)
TOT Approximately 30°C Lower Than Normal at Idle
Unable to Stop Engine
Unable to Obtain Maximum N2 RPM
Uncontrollable Acceleration Above Idle Speed During or Immediately Following
a Cold Engine Start - Ambient Temperature Below 41°F(5°C).
VIBRATION
Excessive Vibration
Powerturbine Governor and Gas Producer Fuel Control Throttle
Shaft Binding.
53
31
30
11
10
13
12
35
36
34
32
46
55
9
45
57
Change 11
1 - 6
9