As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLT 3985 THE CREW REPORTED THE LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. THE AIRCRAFT RETURNED TO CLEVELAND AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED LANDING GEAR SELECTOR LEVER. OPERATIONAL CHECKS WERE GOOD. AIRCRAFT WAS RELEASED FOR SERVICE.