What was found
DURING TAKEOFF THE CREW HEARD AIR RUSHING. THE CREW DETERMINED THAT THE NOSE GEAR DOOR REMAINED OPEN AFTER THE GEAR WAS SELECTED UP. THE FLIGHT RETURNED TO PHL AND MAINTENANCE INSPECTED AND FOUND THE NOSE GEAR DOOR LOCKING MECHANISM STUCK. MAINTENANCE FREED THE LOCKING MECHANISM THE LUBRICATED IT IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 52-00-00. OPERATIONAL CHECKS WERE PERFORMED THEN THE AIRCRAFT WAS FERRIED TO DAY FOR AN OVER WEIGHT INSPECTION. MAINTENANCE PERFORMED AN OVER WEIGHT INSPECTION IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-00-00. NO DEFECTS WERE FOUND AND THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.