As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE INSPECTION FOUND THE COCKPIT RIGHT BULKHEAD WEB AT FS 280 CORRODED AT THE BOTTOM INBOARD CORNER. THE AIRCRAFT WAS REMOVED FROM SERVICE. COMPLIED WITH EO-CR-53MR-174 FOR REPAIRS. THE AIRCRAFT WAS RETURNED TO SERVICE.