As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2850 THE CREW REPORTED THE MAIN PASSENGER DOOR WOULD NOT OPEN. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED DEBRIS AND CYCLED DOOR SEVERAL TIMES. NO DEFECTS NOTED AMM1 52-10-00. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.