As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: UPON REMOVAL OF AFT BULKHEAD LOWER SEAL AT AFT PRESSURE BULKHEAD LOWER INTERCOSTAL ATTACHMENT FOUND TO BE CORRODED. REMOVED CORROSION BY MECHANICAL MEANS AND OUT OF SRM LIMITS. FABRICATED NEW INTERCOSTAL AND REPLACED.