As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN AFT UTILITY AREA BETWEEN FR 66-FR 67 ST-Y318 FLOOR SUPPORT CORRODED. BLENDED AREA ON FLOOR SUPPORT IAW SRM 51-74-00. CHECKED LIMITS L=.600 INCH W=.500 INCH D=.029 INCH, MAX DEPTH ALLOWED=0.016 INCH. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-14 FIG 102. REMOVED DAMAGED FLOOR SUPPORT IAW SRM 51-42-11. INSTALLED NEW FLOOR SUPPORT IAW SRM 51-42-11. PAINTED FASTENERS IAW SRM 51-75-12.