As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - DURING CLIMB AS LANDING GEAR WAS RAISED, CREW REPORTED LOUD RUSHING NOISE AND FELT VIBRATIONS FROM THE NOSE GEAR AREA. EMERGENCY DECLARED, RETURNED DFW WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. UPON ARRIVAL FOUND NOSE GEAR DOOR OPEN. RESET DOOR CLOSED. SYSTEM GROUND CHECK NORMAL OPERATION.