Primary finding
Probable cause
The total failure in fatigue of the helicopter's spur adapter gearshaft. A contributing factor was related to the lack of a suitable emergency landing site.
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NTSB investigation record
LAX91LA198
CompletedHughes 369Hs· N9219F
- Date
- May 5, 1991
- Location
- Keanae, HI
- Conditions
- VMC
- Record
- Completed
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