As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A C-CHECK, THE FORWARD AND AFT FLOOR SUPPORT ANGLES AT FS 280 BETWEEN LBL 9 AND RBL 9 WERE FOUND TO BE CORRODED BEYOND LIMITS. MAINTENANCE IS REPAIRING THE FORWARD AND AFT FLOOR SUPPORT ANGLES AT FS 280 BETWEEN LBL 9 AND RBL 9 IAW EO. (K)