Jul 26, 2024
Incident
Minor Oktaha, OK
InjuriesNone
Phase of Flight-
ConditionsUnk
OperationFAR 135
Probable Cause
The loss of engine power due to high cycle fatigue failure of a power turbine stage 3 turbine wheel blade. The resulting engine imbalance caused a decoupling of the gas producer stage 1 and stage 2 turbine wheels leading to a stage 1 turbine overspeed and subsequent turbine wheel burst.
NTSB ENG24LA028