What was found
DURING CRUISE, THE CREW RECEIVED A RED WARNING PANEL INDICATION FOR A OPEN PASSENGER DOOR. THE CREW VERIFIED THIS ON THE SYSTEMS PAGE. THE CREW CALLED MAINTENANCE CONTROL WHO INSTRUCTED THE CREW TO RETURN TO THE FIELD. MAINTENANCE INSPECTED AND ADJUSTED THE STAIRWAY AND HINGE ALIGNMENT PIN IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 52-00-00. A MAINTENANCE FLIGHT WAS PERFORMED WITH NO FURTHER INCIDENTS. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.