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 FOUND CRACK AT AFT PRESSURE BULKHEAD LOWER INTERCOSTAL ATTACHMENT AT APPROXIMATELY STA 1047 AND LEFT BUTT LINE 29 TO LEFT BUTT LINE 20. REMOVED AND REPLACED INTERCOSTAL PER SRM 10-40-02-0G.