What was found
UPON INSPECTION OF AIRCRAFT, FOUND LEFT WING SETTING AT A HIGHER ANGLE OF INCIDENCE. FURTHER INSPECTION REVEALED THE UPPER AFT CRUSH WASHER AND BOLT HAD SLIPPED DOWN APPROXIMATELY .25 INCH CAUSING LEFT WING TO HAVE MORE LIFT. AIRCRAFT HAD JUST FINISHED WITH A STRUCTURAL INSPECTION. ALL EIGHT WING BOLTS WERE REMOVED AND MAGNAFLUXED. THE CRUSH WASHER CLEARLY HAD 2 SETS OF SERRATIONS WHERE IT HAD SLIPPED AND WAS RETORQUED.