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 FLOORBEAM LOCATED AT FR 65+18" AND AT LEVEL Y1450 IN AFT PAX CABIN L=1.016" W=0.180" D=0.001". REPLACED FLOORBEAM LOCATED AT FR 65 TO FR 66 AND AFT LEVEL Y1450 IN AFT PAX CABIN IAW SRM 51-72-11 AND DWG D53470150.