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 ON NUT PLATES LOWER SIDE OF AFT CARGO COMPARTMENT FLOORBEAM BS 1304 TO BS 1312, LBL 2. MAINTENANCE REMOVED DAMAGED FLOORBEAM FROM BS 1215 TO BS 1320, LBL 2; FABRICATED A NEW REPLACEMENT FLOORBEAM AND SPLICES; INSTALLED REPAIR PARTS IAW B757-200 SRM 51-70-11, PG 1-6.