What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) PIC was turning the propellor by hand. By his statement this was to assure the cylinders were clear prior to starting engine. The engine unexpectedly started. The pic's wife was in the right cockpit seat. The a/c got away from the PIC, hit a hanger ripping one wing off. There was approx 40 gallons of fuel spilled as a result of the wing separation.
As the FAA filed it
(-23) PIC WAS TURNING THE PROPELLOR BY HAND. BY HIS STATEMENT THIS WAS TO ASSURE THE CYLINDERS WERE CLEAR PRIOR TO STARTING ENGINE. THE ENGINE UNEXPECTEDLY STARTED. THE PIC'S WIFE WAS IN THE RIGHT COCKPIT SEAT. THE A/C GOT AWAY FROM THE PIC, HIT A HANGER RIPPING ONE WING OFF. THERE WAS APPROX 40 GALLONS OF FUEL SPILLED AS A RESULT OF THE WING SEPARATION.