Primary finding
Probable cause
The failure of the tail rotor blade after being struck by the pilot's knee board, and the failure of the pilot to adequately secure the knee board while in flight.
NTSB investigation record
Robinson R22Beta· N40049
Primary finding
The failure of the tail rotor blade after being struck by the pilot's knee board, and the failure of the pilot to adequately secure the knee board while in flight.
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