As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE AT 27,000 FEET, THE CREW RECEIVED A DOORS LIGHT ON THE RED WARNING PANEL. THERE WAS NO CHANGE IN THE PRESSURIZATION. THE CREW DESCENDED TO 15,000 FEET AND THE LIGHT EXTINGUISHED. UPON ARRIVAL AT PIT, MAINTENANCE INSPECTED AND ADJUSTED THE OVER THE CENTER SWITCH SENSOR IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 52-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.