As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED A BURNING PLASTIC ODOR TOWARDS THE AFT CARGO BAY. MAINTENANCE RAN THE AIRCRAFT, INSPECTED, AND RAN THE ENVIRONMENTAL CONTROL SYSTEM IN ACCORDANCE WITH BOMBARDIER AIRCRAFT MAINTENANCE MANUAL 36-00-00, NO DEFECTS WERE NOTED. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.