Incident Overview
According to the pilot's statement, the helicopter was landing at an airport for fuel when the front of the landing skids touched down, followed by the rear area of the skids. After touchdown, the helicopter encountered ground resonance. The pilot attempted to lift off, but the helicopter remained on the ground.
Passenger Account
The passenger reported that the touchdown was harder than they had experienced the previous day.
Witness Observations
Witnesses observed that the helicopter remained on the ground and continued to bounce up and down until the tail rotor struck the ground.
Examination Findings
Examination of the helicopter revealed no preimpact failure of the airframe or rotor system.