As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-09 CHECK EXFOLIATION CORROSION WAS FOUND AT NUT PLATES ON AFT CARGO COMPARTMENT FLOORBEAM FROM BS 1503 TO BS 1513, RBL 9. MAINTENANCE REMOVED CORRODED SECTION OF FLOORBEAM FROM BS 1503 TO BS 1513, RBL 9; FABRICATED 2 EACH FILLERS, AND 2 EACH REPAIR DOUBLERS; INSTALLED REPAIR PARTS IAW B757-200 SRM 51-70-11 PG 6 FIG 1.