As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE STARTER/GENERATOR HAD A CATASTROPHIC BEARING FAILURE, ON THE FRONT SHAFT MOUNT OF THE STARTER/GENERATOR. THIS CAUSED A PRONOUNCED ENGINE VIBRATION ON THE NR 2 ENGINE, PROMPTING THE FLIGHT CREW TO SHUT THE ENGINE DOWN IN FLIGHT. COMPONENT WAS O/H, WO R11-03791.