As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF DUE TO GROUND SHIFT FAILURE. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPACKED NOSE GEAR STRUT AND SERVICED TO PROPER LEVELS. OPERATIONAL CHECK NORMAL AND AIRCRAFT RETURNED TO SERVICE.