As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, FOUND AFT CABIN UTILITY AREA FLOOR SUPPORT BETWEEN FR64-66, Y-765 UPPER SURFACE FLANGE CORROSION. REMOVED CORROSION AND CHECKED LIMITS L=1.8" W=1.5" D=.055" FOUND TO BE OUT OF LIMITS IAW TRM 53-41-15 AND SRM 51-74-00. REPLACED FLOOR SUPPORT IAW TRM 53-21-01 AND SRM 51-42-11.