What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
At approximately 0910 the pilot and friend departed Massey Ranch Airpark (X50) to complete a purchase test flight on the zenith 750 experimental amateur-built aircraft. The pilot had the completed bill of sale and planned to depart X50 and complete his flight to greenville, TN after a successful test flight around the pattern at X50. The pilot stated he needed full right rudder on the ground to center the aircraft and on takeoff to keep the aircraft in straight and level flight. He was able to decrease right rudder with increase altitude. At about 800? The pilot heard a loud boom noise in the back of the aircraft and the flight controls were completely locked/uncontrollable. The aircraft attempted to dive down and left as the pilot attempted to unlock the flight controls. Upon landing, the aircraft was still uncontrollable as it veered left off the runway flipping upside down to a full stop in the water. Both pilot and passenger departed the aircraft with minor cuts and abrasions.
As the FAA filed it
AT APPROXIMATELY 0910 THE PILOT AND FRIEND DEPARTED MASSEY RANCH AIRPARK (X50) TO COMPLETE A PURCHASE TEST FLIGHT ON THE ZENITH 750 EXPERIMENTAL AMATEUR-BUILT AIRCRAFT. THE PILOT HAD THE COMPLETED BILL OF SALE AND PLANNED TO DEPART X50 AND COMPLETE HIS FLIGHT TO GREENVILLE, TN AFTER A SUCCESSFUL TEST FLIGHT AROUND THE PATTERN AT X50. THE PILOT STATED HE NEEDED FULL RIGHT RUDDER ON THE GROUND TO CENTER THE AIRCRAFT AND ON TAKEOFF TO KEEP THE AIRCRAFT IN STRAIGHT AND LEVEL FLIGHT. HE WAS ABLE TO DECREASE RIGHT RUDDER WITH INCREASE ALTITUDE. AT ABOUT 800? THE PILOT HEARD A LOUD BOOM NOISE IN THE BACK OF THE AIRCRAFT AND THE FLIGHT CONTROLS WERE COMPLETELY LOCKED/UNCONTROLLABLE. THE AIRCRAFT ATTEMPTED TO DIVE DOWN AND LEFT AS THE PILOT ATTEMPTED TO UNLOCK THE FLIGHT CONTROLS. UPON LANDING, THE AIRCRAFT WAS STILL UNCONTROLLABLE AS IT VEERED LEFT OFF THE RUNWAY FLIPPING UPSIDE DOWN TO A FULL STOP IN THE WATER. BOTH PILOT AND PASSENGER DEPARTED THE AIRCRAFT WITH MINOR CUTS AND ABRASIONS.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.