As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW INFLIGHT T1316/9SEPT SEVERE VIBRATION AFTER LANDING GEAR WAS RETRACTED ON TAKEOFF IN AREA OF LANDING GEAR. FOUND RIGHT NOSE GEAR DOOR EXTENDED. REPLACED RIGHT HAND NOSE LANDING GEAR DOOR LINK ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION.