As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF SEAT RAIL AT RBL9 BETWEEN FS838.00 TO FS852.00 FLOORBEAM FOUND TO BE CORRODED. REMOVED AND INSTALLED NEW FLOOR BEAM SECTION AT RBL 9 F/S 847 TO F/S 847+56 UNDER SEAT RAIL AT RBL9 BETWEEN FS838.00 TO FS852.00 IAW SRM 53-00-41-201-001-A03. COMPLIED WITH TASK CARD 51-900-1002-SKY.