What was found
FLIGHT 5617 - EN ROUTE JAN-BOS DURING CLIMB ENCOUNTERED VIBRATION FROM THE LEFT ENGINE, FLIGHT DIVERTED TO CVG. REPLACED THE LEFT ENGINE FAN BLADES.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT 5617 - EN ROUTE JAN-BOS DURING CLIMB ENCOUNTERED VIBRATION FROM THE LEFT ENGINE, FLIGHT DIVERTED TO CVG. REPLACED THE LEFT ENGINE FAN BLADES.