As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRANKSHAFT SEPARATED BETWEEN NR 2 ROD BEARING AND NR 2 MAIN BEARING JOURNALS. FRETTING NOTED ON CASE MATING HALVES. NR 1 CYLINDER WAS PREVIOUSLY REMOVED AND REPLACED APPROXIMATELY 555 HOURS BEFORE FAILURE OF CRANK. NR 2 MAIN BEARING HAD SHOWED SIGNS OF SPINNING.