As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK IN BNA, FLOOR SUPPORT WEB IS CORRODED BETWEEN FS 288 AND FS 294. MAINTENANCE REMOVED CORROSION AND SEVERAL RIVETS. MATERIAL REMOVED IS OUT OF LIMITS IAW SRM 51-10-10. REMOVED AND REPLACED CORRODED WEB WITH NEW WEB IAW SRM 51-40-23.