T-45C TS, ADV, & IUT ENG-05
Engine and Related Systems Malfunctions
V. Engine stalls 1.8.1.1.5.1
A. Indications
1. “Pop” or “bang” followed by a “buzzing” sound and vibrations
2. Lack of engine acceleration
B. Verifications
1. Sudden increase in EGT
2. Decrease in rpm
C. Effects on flight safety
The seriousness of the effects of this malfunction depends on its cause.
An engine stall may warrant abort and landing as soon as possible. If
the stall is “locked in” (unclearable) the engine must be shut down to
prevent serious damage. Once shut down an airstart may be attempted
depending on the situation and flight envelope.
1. Possible engine flameout
2. Possible loss of engine performance
3. Possible undetected engine damage
VI. Engine vibrations 1.8.1.1.10.1
NOTE: Vibrations may be caused by the engine, engine accessories, flight
controls, airframe, gear doors, or other components.
A. Indications
1. Tactile: vibrating airframe
2. Aural: rumbling or buzzing noise
B. Verifications
1. Reduce throttle to locate vibration range
2. Wingman inspects for abnormalities
C. Effects on flight safety
1. May indicate mechanical failure of internal engine parts, which
could lead to engine failure
2. May indicate degradation or failure of other engine-driven
accessories
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