What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Control stick broke off, lost altitude, deployed aircraft parachute, landed in a field near the runway. (.4) the owner/builder (pilot) of the kitplane had accrued approximately 70 hours of operating time on the aircraft. During a flight, he began to lose aileron control. Shortly after entering downwind for landing, all aileron and elevator control were lost, and the pilot actuated the aircraft's ballistic parachute. Postcrash examination revealed that the pilot had installed only the forward control stick and torque tube, and had not installed either the rear flight control stick nor the interlink tube. This absence resulted in a structurally weakened control system and subsequent disconnect of the forward flight control stick from the torque tube in torsional overload. There was no caution note within the kitplane assembly instructions advising the builder that failure to install either the aft control stick and/or interlink tube would result in a compromise of the structural integrity of the fore and aft stick, torque tube and interlink tube assembly.
As the FAA filed it
CONTROL STICK BROKE OFF, LOST ALTITUDE, DEPLOYED AIRCRAFT PARACHUTE, LANDED IN A FIELD NEAR THE RUNWAY. (.4) THE OWNER/BUILDER (PILOT) OF THE KITPLANE HAD ACCRUED APPROXIMATELY 70 HOURS OF OPERATING TIME ON THE AIRCRAFT. DURING A FLIGHT, HE BEGAN TO LOSE AILERON CONTROL. SHORTLY AFTER ENTERING DOWNWIND FOR LANDING, ALL AILERON AND ELEVATOR CONTROL WERE LOST, AND THE PILOT ACTUATED THE AIRCRAFT'S BALLISTIC PARACHUTE. POSTCRASH EXAMINATION REVEALED THAT THE PILOT HAD INSTALLED ONLY THE FORWARD CONTROL STICK AND TORQUE TUBE, AND HAD NOT INSTALLED EITHER THE REAR FLIGHT CONTROL STICK NOR THE INTERLINK TUBE. THIS ABSENCE RESULTED IN A STRUCTURALLY WEAKENED CONTROL SYSTEM AND SUBSEQUENT DISCONNECT OF THE FORWARD FLIGHT CONTROL STICK FROM THE TORQUE TUBE IN TORSIONAL OVERLOAD. THERE WAS NO CAUTION NOTE WITHIN THE KITPLANE ASSEMBLY INSTRUCTIONS ADVISING THE BUILDER THAT FAILURE TO INSTALL EITHER THE AFT CONTROL STICK AND/OR INTERLINK TUBE WOULD RESULT IN A COMPROMISE OF THE STRUCTURAL INTEGRITY OF THE FORE AND AFT STICK, TORQUE TUBE AND INTERLINK TUBE ASSEMBLY.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.