As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN LANDING GEAR WAS RETRACTED AFTER TAKEOFF, RED NOSE GEAR UNSAFE LIGHT REMAINED ILLUMINATED. FOLLOWED COCKPIT OPERATING MANUAL PROCEDURE AND RECYCLED GEAR. LIGHT EXTINGUISHED WHEN AIRSPEED WAS REDUCED TO 220 KNOTS. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED NOSE GEAR LOCK SENSOR AND ADJUSTED TARGETS. OPERATIONAL CHECK OK.