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 OCCURRED AFTER GEAR RETRACTION ON TAKEOFF. CREW RECYCLED GEAR WITH SAME RESULTS. FLIGHT WAS RETURNED TO DFW AND LANDED WITHOUT INCIDENT. CREW DECLARED AN EMERGENCY DUE TO OVERWEIGHT LANDING CONDTIONS. MAINTENANCE FOUND RIGHT NOSE GEAR DOOR NOT PROPERLY LATCHED AT SNUBBER. RESECURED DOOR.