As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED UPON GEAR RETRACTION, NOSE LANDING GEAR UNSAFE LIGHT ILLUMINATED. LIGHT REMAINED ON AFTER CYCLING GEAR. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED D1-32 NOSE GEAR LOCK SENSOR. SYSTEM GROUND CHECK NORMAL OPERATION.