As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AU) NR 2 MAIN BEARING FAILURE, POSSIBLY CAUSED BY FRETTING OF THE CRANKCASE HALVES. THIS FAILURE ALSO CAUSED TWO MAJOR CRACKS IN THE CRANKSHAFT, RADIATING OUT FORWARD AND AFT OF THE OIL HOLE AND NUMEROUS SURFACE CRACKS ON THE FACE OF THE MAIN JOURNAL.