As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONIC COMPARTMENT DOOR CUTOUT INTERCOSTAL BETWEEN FS 349 AND 364 BETWEEN STR 26-27R IS CORRODED. REMOVED CORRODED INTERCOSTAL IAW SRM 51-42-06 AND 51-42-21. LOCATED AND DRILLED NEW INTERCOSTAL AND INSTALLED IAW SRM 51-42-06 AND 51-42-21.