As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BS 349 - 364 INTERCOSTAL ON STRINGER 27R WAS CORRODED AROUND FASTENERS. THE INTERCOSTAL WAS FOUND OUT OF LIMITS, DUE TO NO ALLOWABLE DAMAGE TO THE ATTACHED FLANGE IAW SRM. REMOVED AND REPLACED THE INTERCOSTAL IAW SRM, AND DRAWING. RESTORED ACCESS AND FINISH.