As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)ENGINE TEARDOWN FOLLOWING SUDDEN FAILURE. CRANKSHAFT BROKEN IN THREE PIECES. THE BREAKS ARE THROUGH THE NUMBER 4 AND 6 CRANK CHEEKS. ALSO SEVERE DAMAGE TO SEVERAL CONRODS, COUNTERWEIGHTS AND INTERIOR OF CASE. CRANKSHAFT DID NOT SHOW ANY SIGNS OF LACK OF LUBRICATION.