What was found
IN-FLIGHT FAILURE. OWNER-PILOT NOTICED SLOPPY AILERON RESPONSE, SAW RT AILERON 'VIBRATING', NOT RESPONDING TO CONTROL INPUT. RIGHT CONTROL LINK ROD ASSEMBLY LOCATED AT BELLCRANK BELOW CABIN FLOOR HAD BROKEN ALONG FACTORY WELD THEN THROUGH THE TUBING WALL. THE BREAK ALONG THE WELD SHOWED SIGNS OF AGE, THE BREAK THROUGH THE TUBE WALL APPEARED RECENT. INSPECTORS DETERMINED THE AILERONS UP AND DOWN STOPS SHOWED NO SIGNS OF DAMAGE AND THE REST OF THE AILERON SYSTEM SHOWED NO SIGNS OF DAMAGE OR ABUSE. NOTE, THE REPLACMENT PART IS SAME PART NUMBER, BUT REINFORCED AT BOTH 90 DEGREE CORNERS.