Primary finding
Probable cause
excessive maneuvering by the pilot, which allowed the main rotor blades to contact and sever the tail rotor system and allowed mast bumping to occur.
NTSB investigation record
Cunningham Rotorway exec· N18WC
Primary finding
excessive maneuvering by the pilot, which allowed the main rotor blades to contact and sever the tail rotor system and allowed mast bumping to occur.
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