What was found
FLIGHT 5508 - EN ROUTE BNA-JFK RECEIVED A LANDING GEAR DISAGREE WITH ASSOCIATED VIBRATION, FLIGHT RETURNED TO CVG. REPLACED THE MAIN LANDING GEAR SELECTOR VALVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT 5508 - EN ROUTE BNA-JFK RECEIVED A LANDING GEAR DISAGREE WITH ASSOCIATED VIBRATION, FLIGHT RETURNED TO CVG. REPLACED THE MAIN LANDING GEAR SELECTOR VALVE.