As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED INSPECTION THE CABIN FLOOR SUPPORT FS 1521, RBL 48.5-74.5 WAS FOUND TO HAVE LEVEL 2 CORROSION. MAINTENANCE REPAIRED THE FLOOR SUPPORT AT FS 1521, RBL 48.5-74.5 IAW THE L1011 STRUCTURAL REPAIR MANUAL, 53-21-00, FIG 815. (M)