What was found
KHA - FLT 613 LRD TO MMGDL - ON TAKEOFF FROM LRD, THE FLIGHT CREW NOTICED MODERATE VIBRATION AFTER GEAR RETRACTION. THE FLIGHT CREW RETURNED TO LRD. UPON GEAR EXTENSION, THE VIBRATION STOPPED. AN UNEVENTFUL LANDING WAS MADE. AFTER PARKING, DISCOVERED THE FORWARD NOSE GEAR DOORS WERE OPEN. FURTHER INVESTIGATION REVEALED THE NOSE GEAR DOORS WERE OUT OF ADJUSTMENT. THE AIRCRAFT WAS FERRIED WITH THE GEAR DOWN FROM LRD TO DFW WHERE THE NOSE GEAR DOORS WERE ADJUSTED PER DC-9 MM. THE AIRCRAFT WAS RETURNED TO SERVICE. (X)