As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOORBEAM AT STA 1660 CORRODED AROUND FLOORBOARD MOUNT HOLES BL 0 TO LBL 30. REMOVED CORROSION AND FOUND TO BE WITHIN LIMITS OF SRM. ORIGINAL MATERIAL THICKNESS IS .125, REMOVED .011, AND REMAINING MATERIAL THICKNESS IS .1 14. ALODINED AND PRIMED PER SRM ON NON ROUTINE 20414.