What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Performing hot refueling, gust of wind caused blade to strike the top of the truck, rolled over onto the truck. (-23) the pilot was at the controls with the helicopter idling, when the pilot's father drove a pickup truck under the main rotor blades. The truck struck the main rotor blades.
As the FAA filed it
PERFORMING HOT REFUELING, GUST OF WIND CAUSED BLADE TO STRIKE THE TOP OF THE TRUCK, ROLLED OVER ONTO THE TRUCK. (-23) THE PILOT WAS AT THE CONTROLS WITH THE HELICOPTER IDLING, WHEN THE PILOT'S FATHER DROVE A PICKUP TRUCK UNDER THE MAIN ROTOR BLADES. THE TRUCK STRUCK THE MAIN ROTOR BLADES.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.