As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - C13 CK - C - CORROSION FOUND ON FLOORBEAM UPPER FLANGE AT BS 1016, LBL 41 TO RBL 40, (PREVIOUSLY REPAIRED), FOUND TO BE OUT OF LIMITS AFTER CORROSION REMOVAL. MAINTENANCE REMOVED CORRODED UPPER FLANGE, FABRICATED REPAIR PARTS AND INSTALLED IAW AWA ER 15-5365-01309-TB3.