Primary finding
Probable cause
Overheating and subsequent failure of the number one tail rotor hanger bearing for an undeterined reason, and failure of the tail rotor drive shaft.
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NTSB investigation record
FTW91FA155
CompletedBell 412· N3909F
- Date
- August 26, 1991
- Location
- Garden Banks,
- Conditions
- VMC
- Record
- Completed
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