What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During high speed taxi test on runway 11, N72TZ a frazier allen Tangent, and aircraft of the pilots own design and construction, the pilot lost control of the aircraft, the aircraft pitched up at about a 45 degree angle and climbed to about 125 ft. at this point the aircraft started an uncontrolled descent, turned about 90 degrees from the runway heading and crashed in a level attitude about 150 ft of the south side of the runway. The aircraft had traveled about 2700 ft from the start of the taxi run to the accident site. The aircraft had been certificated on 07-02-09 and was being tested in the ground handle phase. Initial taxi tests had shown that the elevator did not seem to have enough authority. The elevator was redesigned, installed and rigged the day before the accident.
As the FAA filed it
DURING HIGH SPEED TAXI TEST ON RUNWAY 11, N72TZ A FRAZIER ALLEN TANGENT, AND AIRCRAFT OF THE PILOTS OWN DESIGN AND CONSTRUCTION, THE PILOT LOST CONTROL OF THE AIRCRAFT, THE AIRCRAFT PITCHED UP AT ABOUT A 45 DEGREE ANGLE AND CLIMBED TO ABOUT 125 FT. AT THIS POINT THE AIRCRAFT STARTED AN UNCONTROLLED DESCENT, TURNED ABOUT 90 DEGREES FROM THE RUNWAY HEADING AND CRASHED IN A LEVEL ATTITUDE ABOUT 150 FT OF THE SOUTH SIDE OF THE RUNWAY. THE AIRCRAFT HAD TRAVELED ABOUT 2700 FT FROM THE START OF THE TAXI RUN TO THE ACCIDENT SITE. THE AIRCRAFT HAD BEEN CERTIFICATED ON 07-02-09 AND WAS BEING TESTED IN THE GROUND HANDLE PHASE. INITIAL TAXI TESTS HAD SHOWN THAT THE ELEVATOR DID NOT SEEM TO HAVE ENOUGH AUTHORITY. THE ELEVATOR WAS REDESIGNED, INSTALLED AND RIGGED THE DAY BEFORE THE ACCIDENT.