Primary finding
Probable cause
The pilot's inadequate aircraft preflight during which he failed to notice the main rotor shipping block had not been removed, and the resultant restricted movement of the flight control system.
NTSB investigation record
Hiller Uh-12E· N508HV
Primary finding
The pilot's inadequate aircraft preflight during which he failed to notice the main rotor shipping block had not been removed, and the resultant restricted movement of the flight control system.
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