As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSP INFLIGHT T1231/29 OCT - AFTER TAKEOFF NOSE GEAR RED LIGHT REMAINED ON. ALL OTHER LIGHTS WERE OUT. PUT LANDING GEAR DOWN AND ALL LANDING GEAR LIGHTS WERE GREEN. LANDING GEAR HANDLE LOCKED IN THE DOWN POSITION. RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED AND REPACKED NOSE LANDING GEAR INNER CYLINDER. SYSTEM GROUND CHECKED NORMAL OPERATION.