What was found
(CAN) PILOT COMPLAINED OF WING ROCKING PROBLEM. INVESTIGATION FOUND 1/4 PLAY AT RUDDER TRAILING EDGE WHILE PEDALS BEING HELD AT FULL DEFLECTION. PLAY FOUND TO ORIGINATE FROM BELLCRANK FITTING (P/N 50-600016) AND LOWER SUPPORT TUBE ATTACHMENT POINT (RIVETS). DISASSEMBLY FOUND THE RIVETS WORN, THE 3 BOLTS (P/N AN173-12A) CONNECTING THE RUDDER BELLCRANK AND BELLCRANK FITTING SLIGHTLY BENT AND THE HOLES DISTORTED NEW BELLCRANK, BELLCRANK FITTING AND BOLTS INSTALLED. SUBMITTER SUSPECTS DAMAGE CAUSED FROM WIND GUSTS AND TOWING WITH GUST LOCK ON.