Primary finding
Probable cause
The pilot’s failure to maintain control of the helicopter during a hover taxi, which resulted in a rollover.
Investigator assessment
Analysis narrative
The pilot was taxiing the helicopter about 3 ft above the ground in preparation to takeoff when his door popped open. The pilot said he instinctively removed his left hand from the collective to shut the door; however, before he could even reach the door, the collective lowered and there was reduction in power. The helicopter then rolled over on to its right side, which resulted in substantial damage to the fuselage and main rotor system. The pilot reported there were no preimpact mechanical malfunctions that contributed to the accident.