As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4632 THE CREW REPORTED A LOUD SQUEAL FROM THE MAIN DOOR AT ALTITUDE. THE AIRCRAFT WAS REMOVED FROM SERVICE. INSPECTED MAIN DOOR AND SEAL PER CRJ MM, NO DEFECTS NOTED. OK TO CONTINUE SERVICE. NO PARTS REMOVED OR REPLACED. THE AIRCRAFT WAS RETURNED TO SERVICE.