As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:C+SI DURING INSPECTIONS OF THE WING CENTER SECTION AFT SPAR AREA AIR CON, TWO FASTENERS FOUND POPPED ON THE WING CENTER SECTION REAR SPAR LOWER CHORD VERTICAL FLANGE AT BS 870 LBL38. NDT CONFIRMS CORROSION PRESENCE. REAR SPAR CHORD AND ASSOCIATED STRUCTURE REMOVED. LWR CHORD REPLACED IAW DWG 65-16202 AND DWG 65C21566.