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