As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS IN BASE MAINTENANCE. EVIDENCE OF CORROSION AT FUSELAGE STATION 1307 BUTT JOINT AND S38L. REMOVED FASTENERS AND STRINGER SPLICE AND FOUND FILLER SHIM CORRODED. REMOVED AND REPLACED FILLER SHIM AND REINSTALLED FASTENERS AND STRINGER SPLICE IAW SRM 51-40-02 AND EA 263977.