As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C CHECK INSPECTION , STRINGER 18 LEFT WAS FOUND CORRODED BETWEEN FRAMES 16 AND STA 6653.1. THE STRINGER SPLICE AT FRAME 16 WAS ALSO FOUND CORRODED. MAINTENANCE REMOVED AND REPLACED THE CORRODED STRINGER AND STRINGER SPLICE IAW SRM.