As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN DALFORT FOR C-CHECK, MAINTENANCE FOUND A LARGE CRACK AFT END OF THE BULKHEAD TIE INTERCOSTAL AND CORROSION ON THE FORWARD END AT STATION 980 TO 1000 STRINGER 32L. MAINTENANCE REMOVED AND REPLACED THE INTERCOSTAL IAW SRM 51-1-20D AND 51-1-21.