As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR HANDLE WOULD NOT RAISE AFTER TAKEOFF. CREW ACTIVATED GEAR HANDLE RELEASE BUTTON AND RAISED GEAR. LEFT MAIN GEAR UNSAFE LIGHT REMAINED ON AFTER GEAR RETRACTION AND AIRCRAFT WOULD NOT PRESSURIZE. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE RESERVICED STRUT TO PROPER LEVELS, OPERATIONAL CHECK NORMAL.