As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR FRAME UPPER CAP SHOWS EVIDENCE OF POSSIBLE CORROSION AT BL20L TO BL40L BS 1020. REMOVED CORR ON FLOOR FRAME UPPER CAP (PLATE) IAW SRM 51-10-02. 100% MAT LOSS OUT OF LIMITS IAW SRM 53-00-51-1A. REMOVED, FABRICATED AND INSTALLED IAW SRM 51-40-02, 51-40-05 AND DWG 144N5070 REV B AND REV W.