As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VIBRATION FROM NOSE GEAR AREA AFTER TAKEOFF. FLIGHT RETURNED TO DFW AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE LEFT FORWARD NOSE GEAR DOOR DOWN AND FORWARD LINK OUT OF ADJUSTMENT. ADJUSTED EYEBALL ON LINK, OPERATIONAL CHECK NORMAL.