Primary finding
Probable cause
The pilot's improper execution of the autorotation. Contributing to this accident was the excessive sink rate and misjudging of the altitude.
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NTSB investigation record
LAX90LA321
CompletedBrantly Helicopter B-2B· N2159W
- Date
- September 12, 1990
- Location
- Novato, CA
- Conditions
- VMC
- Record
- Completed
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