As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION FOUND CORROSION ON PREVIOUS REPAIR FLOOR BEAM UPPER AND LOWER STA=986 RBL 43 AT AFT PASSENGER COMPARTMENT. FILLER OF PREVIOUS REPAIR FLOOR BEAM (UPPER AND LOWER) STA=986 RBL 43 AT AFT PASSENGER COMPARTMENT WAS REPLACED, PER ER/A 464736-14MA REV A.