As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 2 YEAR CHECK IN BNA, FOUND FLOOR FLANGE AT FS 258 IS CORRODED OUT OF LIMITS. THE FLANGE HAS BEEN REMOVED AND A NEW PART FABRICATED PER SAMPLE IAW SRM 51-20-20 AND INSTALLED IAW SRM 51-40-21. REF: EAMS WORK ORDER 213643 TASK 1513.