Incident Details
A Schweizer 269C helicopter, operated by a certificated flight instructor and a student pilot, was conducting a hover taxi from the hangar area to a fuel pump, a distance of about 600 feet. The student pilot was initially at the controls.
Sequence of Events
Upon reaching the fuel pump, the student pilot expressed discomfort with landing on a raised platform in a confined area. The flight instructor then took control of the helicopter. The instructor proceeded to land the helicopter on the platform. Shortly after touchdown, the helicopter entered ground resonance. The flight instructor immediately rolled off the throttle, but the ground resonance intensified.
Damage
The ground resonance event resulted in substantial damage to the helicopter. The specific components damaged are not detailed in the source.