As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING AEROBATICS (1/2 SNAP TO LEFT) THE LEFT AILERON DEPARTED AIRCRAFT. INVESTIGATION REVEALED CENTER AILERON HINGE HAD FAILED. LOW CYCLE FATIGUE. AIRCRAFT DESIGNER TO PERFORM A RE-EVALUATION OF THE HINGE DESIGN. AIRCRAFT IS LICENSED ''EXPERIMENTAL EXHIBITION''. (X)