As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CVG - FLT 4020 - RIGHT MAIN GEAR WILL NOT LOCK UP TO THE RETRACT POSITION DURING CLIMB. CONTINUED FLIGHT WITHOUT FURTHER MECHANICAL INCIDENT - DIVERTED TO RFD PER WEATHER. RFD MAINTENANCE REPLACED RIGHT MLG UPLOCK BOX. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (X)