As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION (C53-111-01-1), ON UNDERSIDE OF FLOOR SUPPORT AROUND RIVNUT BS 480 WL 155 LBL 13.5. REMOVED CORROSION ON UNDERSIDE OF FLOOR SUPPORT AROUND RIVNUT BS 480 WL 155 LBL 13.5. REMOVED .003 INCH BY 1 INCH BY 1.125 INCH FROM ORIGINAL THICKNESS OF .071. FOUND TO BE WITHIN LIMIT PER FEDEX SRM 53-10-1, ALODINED AND PRIMED.