What was found
(CAN) WING REAR ATTACH BOLT & ECCENTRIC BUSHING ROTATED WHICH LED TO A INCIDENCE ANGLE CHANGE ON THE R/H WING. AN INSPECTION OF THE ATTACH BOLT & BUSHINGS WAS CONDUCTED WITH NO DEFECTS FOUND. AN INSPECTION OF THE WING STRUCTURE, SKINS, FLAP SYSTEM & FUEL SYSTEM WAS ALSO CONDUCTED WITH NO DEFECT FOUND. SEE ATTACHED TORQUE PROCEDURE FOR THE REAR WING ATTACH BOLT. NOTE: UPON DISASSEMBLY THE WASHERS COULD NOT BE SPUN. SUSPECTED CAUSE IS POOR TORQUE PROCEDURES IN THE MAINTENANCE MANUAL. BOLT RETORQUE & ACFT TEST FOUND SATISFACTORY, AIRCRAFT RELEASED TO SERVICE.