As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON SHEAR TIE FLOOR STRUCTURE AT FR 81 BETWEEN STR 27R-28R ON AFT CARGO COMPARTMENT. REPLACED SHEAR TIE LOCATED AT FR 81 BETWEEN STR27R-28R ON AFT CARGO COMPARTMENT IAW SRM 51-40-08 AND DRAWING 170-65180-445.