As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION UNDER FLOORBEAM AROUND SCREW HOLE STA 377 LBL 50. MAJOR REPAIR ACCOMPLISHED: REMOVED DAMAGED FLOORBEAM FROM STA 377 LBL 37 TO LBL 64 PER SRM, FABRICATED REPAIR FLOOR BEAM AND ANGLES PER SRM, LOCATED AND DRILLED NEW REPAIR FLOORBEAM IAW SRM. INSTALLED ALL PRIMED AND TREATED PARTS IAW B757 SRM.