Primary finding
Probable cause
The separation of the 90 degree gearbox and tail rotor assembly for undetermined reasons followed by the inability of the pilot-in-command to maintain control of the rotorcraft.
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NTSB investigation record
SEA98LA160
CompletedMcDonnell Douglas 369D· N1096L
- Date
- August 10, 1998
- Location
- Oso, WA
- Conditions
- VMC
- Record
- Completed
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