From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The pilot was repositioning for takeoff. As he turned the helicopter by ground taxi from a westerly to a northerly heading, the main rotor blades struck the hanger on the left of the helicopter. Both main rotor blades were substantially damaged. There was no further damage to the helicopter.
As the FAA filed it
THE PILOT WAS REPOSITIONING FOR TAKEOFF. AS HE TURNED THE HELICOPTER BY GROUND TAXI FROM A WESTERLY TO A NORTHERLY HEADING, THE MAIN ROTOR BLADES STRUCK THE HANGER ON THE LEFT OF THE HELICOPTER. BOTH MAIN ROTOR BLADES WERE SUBSTANTIALLY DAMAGED. THERE WAS NO FURTHER DAMAGE TO THE HELICOPTER.