As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 2C CHECK FOUND FORWARD SILL FROM FS 280.00 TO THE SERVICE DOOR HAS SEVERAL SPOTS OF CORROSION. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE FORWARD SILL FROM FS 280.00 TO THE SERVICE DOOR IAW BOMBARDIER STRUCTUAL REPAIR MANUAL 51-42-06 AND 51-42-13. THE AIRCRAFT WAS RETURNED TO SERVICE.