Sikorsky S-92A, G-IACC
The helicopter was ground taxied onto a parking spot and brought to a stop by the commander, who was the pilot flying. He then intended to apply the parking brake but inadvertently raised the collective control lever, which caused the helicopter to become airborne. He released the collective control lever, which was lowered by the collective trim system to the fully down position, and the helicopter landed heavily, causing damage to the landing gear and airframe.
Published 10 December 2014