What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The aircraft was going through its annual inspection. One of the aircraft privacy data omitted (pilot) went out to perform systems checks, maintenance engine runs and a taxi check. During the engine run up, it was noted that the manifold pressure was not coming up. The operator/ pilot decided to take it on the runway and do a high speed taxi, in an attempt to get the manifold pressure to increase. The aircraft was accelerated to approx... 40-50 KTS. The tail was off the ground. The power was brought back to idle, and the tail held up. A gust of wind came onto the aircraft, pitching it nose down, striking the propeller and eventually flipping it on its back. There were no injuries.
As the FAA filed it
THE AIRCRAFT WAS GOING THROUGH ITS ANNUAL INSPECTION. ONE OF THE AIRCRAFT ^PRIVACY DATA OMITTED^ (PILOT) WENT OUT TO PERFORM SYSTEMS CHECKS, MAINTENANCE ENGINE RUNS AND A TAXI CHECK. DURING THE ENGINE RUN UP, IT WAS NOTED THAT THE MANIFOLD PRESSURE WAS NOT COMING UP. THE OPERATOR/ PILOT DECIDED TO TAKE IT ON THE RUNWAY AND DO A HIGH SPEED TAXI, IN AN ATTEMPT TO GET THE MANIFOLD PRESSURE TO INCREASE. THE AIRCRAFT WAS ACCELERATED TO APPROX... 40-50 KTS. THE TAIL WAS OFF THE GROUND. THE POWER WAS BROUGHT BACK TO IDLE, AND THE TAIL HELD UP. A GUST OF WIND CAME ONTO THE AIRCRAFT, PITCHING IT NOSE DOWN, STRIKING THE PROPELLER AND EVENTUALLY FLIPPING IT ON ITS BACK.THERE WERE NO INJURIES.