What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: the operator at the time of the incident was the mechanic who had worked on the engine. He was doing a high speed taxi and got up to full throttle and halfway down the runway when the left engine locked up and stopped running. The aircraft lifted approximately 8-10 feet off the ground and made a hard left turn, struck the ground and did a nose to tail cartwheel and finally came to rest right side up approx. 350 feet away from the side of the runway in the mud and grass. Victim's injury was a small laceration to his forehead. Since there was no intent to fly the aircraft, this was called an incident.
As the FAA filed it
NARRATIVE: THE OPERATOR AT THE TIME OF THE INCIDENT WAS THE MECHANIC WHO HAD WORKED ON THE ENGINE. HE WAS DOING A HIGH SPEED TAXI AND GOT UP TO FULL THROTTLE AND HALFWAY DOWN THE RUNWAY WHEN THE LEFT ENGINE LOCKED UP AND STOPPED RUNNING. THE AIRCRAFT LIFTED APPROXIMATELY 8-10 FEET OFF THE GROUND AND MADE A HARD LEFT TURN, STRUCK THE GROUND AND DID A NOSE TO TAIL CARTWHEEL AND FINALLY CAME TO REST RIGHT SIDE UP APPROX. 350 FEET AWAY FROM THE SIDE OF THE RUNWAY IN THE MUD AND GRASS. VICTIM'S INJURY WAS A SMALL LACERATION TO HIS FOREHEAD. SINCE THERE WAS NO INTENT TO FLY THE AIRCRAFT, THIS WAS CALLED AN INCIDENT.