What was found
WHILE INSPECTING FOR POSSIBLE HYDRAULIC LEAK AT THE RT WING ROOT, MAINTENANCE DISCOVERED THAT ONE OF THE WING BOLTS FOR THE REAR SPAR STEEL SUPPORT STRUTS HAD FAILED. THE BOLT HEAD HAD SEPARATED FROM THE SHANK OF THE BOLT AND WAS DANGLING FROM THE SAFETY WIRE. UPON REMOVAL, IT APPEARS THAT CORROSION MAY HAVE BEEN A FACTOR IN THE FAILURE. THE INCIDENT HAS BEEN REPORTED TO THE MANUFACTURER AND THE AFFECTED PARTS ARE IN QUARANTINE AWAITING DISPOSITION. THE LOCATION IS AT STATION X424.12, Z174.54 ON THE RIGHT SIDE OF THE AIRCRAFT AND IS THE FORWARD OUTBOARD BOLT OF THE REAR SPAR SUPPORT STRUT (HOCKEY STICK).