As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NEW V.A.R. CRANKSHAFT BROKE BETWEEN NR 2 AND NR 3 CYLINDERS. THIS CRANKSHAFT HAD A TOTAL TIME OF 442 HOURS SINCE NEW. FAILURE WAS IN-FLIGHT AND PILOT MADE SAFE LANDING WITH NO DAMAGE TO AIRCRAFT OR PROPERTY. THIS APPEARS TO BE A DEFECTIVE CRANKSHAFT.