As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED ON CLIMB-OUT AFTER GEAR RETRACTION NOSE GEAR UNSAFE LIGHT ILLUMINATED, CYCLED GEAR, STILL HAD NOSE GEAR UNSAFE LIGHT. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LOWER NOSE LANDING GEAR STRUT PISTON. SYSTEM GROUND CHECK NORMAL OPERATION.