Overview
A helicopter piloted by an individual with a helicopter solo endorsement experienced a loss of control shortly after lift off, resulting in ground contact. The incident occurred when the helicopter entered a right spin during an aborted takeoff.
Sequence of Events
According to the pilot, the helicopter began to spin immediately upon lifting off to an altitude of 5-10 feet above the ground. Despite efforts to regain control, the pilot stated that he could not completely stop the spin. The helicopter subsequently contacted the ground while still in the spin.
Aircraft Damage
Post-incident examination revealed impact damage to the main rotor blades. The tail rotor drive shaft exhibited torsional buckling, consistent with a stoppage forward of the tail rotor drive shaft. Flight control continuity was confirmed, indicating that the control linkages remained intact. The tail rotor's fracture surfaces were consistent with overstress, suggesting failure due to excessive loads.
Pilot Information
The pilot held a helicopter solo endorsement at the time of the incident. No further details about the pilot's experience or qualifications are available.
Investigation
Investigators examined the wreckage and documented the damage patterns. The torsional buckling of the tail rotor drive shaft and the overstress fractures of the tail rotor were noted. Flight control continuity was verified, indicating that the controls were connected and functional prior to impact.