As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VIBRATIONS WERE NOTED FROM THE NOSE OF THE AIRCRAFT AFTER LANDING GEAR RETRACTION. CREW RECYCLED THE LANDING GEAR, VIBRATION RETURNED UPON RETRACTION. THE AIRCRAFT RETURNED TO THE FIELD. THE RIGHT NOSE LANDING GEAR DOOR WAS NOTED TO BE OPEN DURING THE TAXI IN. MAINTENANCE INSPECTED CLEANED AND LUBRICATED THE NOSE LANDING GEAR RETRACT ASSY AND NOSE LANDING GEAR DOOR LATCH, IAW DC-9 MM 32-31-00.