As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON MAIN CABIN FLOORBEAM UPPER SURFACE STA 365 BL- 6R TO BL 15R AROUND FASTENER HOLES. REMOVED CORROSION ON FLOORBEAM UPPER SURFACE, FOUND TO BE OUT OF LIMITS. REMOVED DAMAGE SECTION OF FLOORBEAM, FABRICATED NEW REPAIR SECTION AND SPLICES AND INSTALLED IAW B757 SRM 53-00-51 DURING HMV.