As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR AT STA 324 TO 336 RBL 40 INTERCOSTAL UPPER SURFACE HAS MULTIPLE AREAS OF CORROSION. REMOVED CORROSION IAW SRM 53-00-04, FOUND OUT OF LIMITS IAW SRM 53-00-04. REMOVED & REPLACED INTERCOSTAL STA 324 TO 336 RBL 40. REPLACED INTERCOSTAL IAW SRM51-40-02.