As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BS 345, LBL 20 TO BL 0 CORROSION ON UNDERSIDE OF FLOORBEAM UPPER TEE AT FASTENER HOLES. R & R WITH FLOORBEAM FABRICATED IAW DWG 141N5121, SHT 4 REV AND INSTALLED IAW SRM 51-40-02 REV 105 AND DWG 141N5111, SHT 1, REV C. REPAIR IS CLASSIFIED AS MAJOR.