NTSB Factual Report

The pilot reported that while maneuvering the helicopter at low altitude for an aerial application flight, an usecured clipboard that was on the seat next to him fell, and became lodged under the anti-torque peddles. Unable to free the clipboard, the pilot chose to make a precautionary landing. About 5-10 ft. above ground level, tail rotor authority was lost and the helicopter began to rotate to the right. After about two rotations he was able to land the helicopter. During the touchdown, the stinger folded into the tail rotor.

The helicopter sustained substantial damage to the tail boom.

The pilot reported no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

NTSB Probable Cause

The pilot’s failure to secure a loose item inside the cockpit that interfered with antitorque pedal control and led to a loss of helicopter control due to a loss of tail rotor effectiveness.