As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE FLIGHT, THE RT ENGINE STOPPED. THE PILOTS TRIED TO RESTART THE ENGINE WITHOUT SUCCESS. WHILE SEARCHING THE CAUSE OF THE ENGINE STOPPAGE, WE DISCOVERED THAT THE VALVES WERE NOT WORKING. WE REMOVED THE ENGINE AND SENT IT FOR OVERHAUL, ON DISASSEMBLY THEY FOUND THE CRANKSHAFT BROKEN. ACCORDING TO THE OVERHAUL FACILITY DETONATION WOULD HAVE CAUSED THE CRACK. THE ENGINE WAS REPAIRED AND REINSTALLED.