As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5137 - AFTER TAKEOFF, RECEIVED GEAR DISAGREE MESSAGE AND RIGHT MAIN GEAR DID NOT RETRACT. CREW DECLARED AN EMERGENCY, RETURNED TO CVG AND LANDED WITHOUT INCIDENT. TIGHTENED GAPPED LOOSE RIGHT MAIN GEAR UPLOCK PROX SENSOR TARGET.