Primary finding
Probable cause
That unknown pilot(s) impoperly used the throttle control which caused an overspeed condition. Contributing to this accident was the connecting rod bolt fatigue failure.
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NTSB investigation record
LAX91LA249
CompletedHiller Uh-12E· N507HA
- Date
- June 7, 1991
- Location
- Huron, CA
- Conditions
- VMC
- Record
- Completed
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