As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT 5640, L/P 1333327) CORROSION OUT OF LIMITS ON FLOOR STRINGER RBL 2.90 STA 1330 AT AFT CARGO COMPARTMENT. (IN REF. NRC S/N 00209)(C2). CORRECTIVE ACTION: CORROSION LEVEL 2: STRINGER WAS REPAIRED PER B 757-200 SRM 53-00-53 REPAIR 1, FIG. 201.