As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY INTERCOSTAL CORRODED FS 349-FS 364, STR 27L. REMOVED CORROSION FROM INTERCOSTAL FOUND TO BE OUT OF LIMITS IAW SRM 51-21-06-001-001 AND 53-00-00-001-001. REMOVED INTERCOSTAL IAW SRM 51-42-06. REINSTALLED INTERCOSTAL IAW SRM 51-42-06 AND SRM 51-42-21. MECHANICALLY MEASURED LT INTERCOSTAL WITH MACT 3189 MINIUM REMAINING THICKINESS IS .060", ORINIGAL IS .080". REMOVED IS .020". RECEIVED EA 32-2015-334. COMPLIED WITH EA 32-2015-334.