As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF GEAR DISAGREE LIGHT CAME ON WITH CAUTION LIGHT. HANDLE WAS IN UP POSITION BUT COULD HEAR GEAR DOWN. RAN QRH, PUT GEAR DOWN GOT 3 GREEN & CAME BACK TO LAND. AIRSPEED NEVER GOT ABOVE 210 KIAS. WHEN GEAR DISAGREE LIGHT WAS ON, THERE WAS NOISE COMING FROM THE NOSE OF THE ACFT. R & R NOSE GEAR DOOR ACTUATED SEQUENCE VLV. JACKED ACFT SWUNG GEAR.