As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 2C CHECK FOUND RIGHT AFT LOWER COCKPIT BULKHEAD CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED LOWER WEB IAW BOMBARDIER STRUCTURAL REPAIR MANUAL 51-42-06 AND 51-42-13. THE AIRCRAFT WAS RETURNED TO SERVICE.