What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The subject aircraft took off at Champ Field for a test flight after being reassembled by the owner. The aircraft entered into a left hand turn that could not be stopped with the pilot applying full right spoiler and rudder or by changing power setting or weight shifting. The aircraft crashed on the runway in a nose low, left wing low attitude, destroying the aircraft. The experienced pilot reported accomplishing a thorough pre-flight inspection. A misassembled/misrigged condition was likely caused by the owner not having flight manual or maintenence information for the aircraft.
As the FAA filed it
THE SUBJECT AIRCRAFT TOOK OFF AT CHAMP FIELD FOR A TEST FLIGHT AFTER BEING REASSEMBLED BY THE OWNER. THE AIRCRAFT ENTERED INTO A LEFT HAND TURN THAT COULD NOT BE STOPPED WITH THE PILOT APPLYING FULL RIGHT SPOILER AND RUDDER OR BY CHANGING POWER SETTING OR WEIGHT SHIFTING. THE AIRCRAFT CRASHED ON THE RUNWAY IN A NOSE LOW, LEFT WING LOW ATTITUDE, DESTROYING THE AIRCRAFT. THE EXPERIENCED PILOT REPORTED ACCOMPLISHING A THOROUGH PRE-FLIGHT INSPECTION. A MISASSEMBLED/MISRIGGED CONDITION WAS LIKELY CAUSED BY THE OWNER NOT HAVING FLIGHT MANUAL OR MAINTENENCE INFORMATION FOR THE AIRCRAFT.