As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND CORRODED CIRCUMFERENTIAL SPLICE BENEATH AIR DUCT AT 415.5 STRINGERS 21 LEFT TO 21 RIGHT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED CIRCUMFERENTIAL SPLICE IAW EMB SRM 51-40-02. THE AIRCRAFT WAS RETURNED TO SERVICE.