Incident Overview
A commercial pilot with 17,000 total flight hours, including 700 hours in the same make and model of helicopter, was the sole occupant during an attempted landing on a landing cart. The single-engine helicopter touched down normally on the cart, which was stationary at the time. However, the cart began to move toward a hangar immediately after the helicopter landed.
Circumstances
The landing cart is typically used to facilitate moving the helicopter in and out of the hangar. On the day of the incident, the small tractor normally connected to the cart was not attached, and the cart's wheels were not secured. The pilot reported that upon landing, the cart rolled toward the hangar despite his attempts to control the helicopter.
Sequence of Events
After the cart started moving, the pilot tried to re-establish rotor RPM to stop the movement, but was unable to do so in time. As a result, the main rotor blades struck the hangar. The hangar sustained substantial damage. No information is available regarding damage to the helicopter or any injuries.
Pilot Experience
The pilot held a commercial certificate and had accumulated 17,000 total flight hours, with 700 hours specifically in the same make and model of helicopter involved in the incident.