As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT 3181, CREW REPORTED THAT THE LANDING GEAR DID NOT RETRACT AFTER TAKEOFF. MAINTENANCE INSPECTED SYSTEM AND REMOVED AND REPLACED THE LANDING GEAR ELECTRONIC UNIT. ALL OPERATIONAL CHECKS WERE GOOD. PERFORMED TEST FLIGHT, AND TEST FLIGHT WAS GOOD. AIRCRAFT RETURNED TO SERVICE.