As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ENROUTE, DURING CRUISE FLIGHT. CREW RECEIVED EXTREME VIBRATION. VIBRATION WAS DETERMINED TO BE COMING FROM THE RT ENGINE. CREW FOLLOWED QRH AND SHUT DOWN THE RT ENGINE. CREW DIVERTED. THE RT STARTER GENERATOR WAS FOUND WITH INPUT SHAFT BEARINGS DAMAGED.