As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT 2150, CREW REPORTED THAT AFTER TAKEOFF THE NOSE LANDING GEAR FAILED TO RETRACT. RETURNED TO CLE AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED SYSTEM AND REMOVED AND REPLACED THE NOSE LANDING GEAR CHECK VALVE. ALL OPERATIONAL CHECKS WERE GOOD.