As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE PERFORMING INSPECTIONS IT WAS NOTED THAT THE CABIN FLOOR BEAM UPPER FLANGE IS CORRODED ON LOWER SURFACE AT B.S 950D RBL 4. CORROSION WAS OUT OF LIMITS REMOVED AND REPLACED DAMAGED CHORD, SUPPORT ANGLE BAC1490-2785, SUPPORT ANGLE BAC 1490-2685, REINFORCING STRAP BAC 1512-3353, AND REINFORCING STRAP BAC 1512-3396. INSTALLED REPAIR, NO OTHER DEFECTS WERE NOTED. ACFT RETURNED TO SERVICE.