As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING NIGHT FLIGHT THE PILOT OBSERVED AN INCREASE IN E.G.T. ON THE NR1 ENGINE, SPARKS WERE SEEN COMING INTERMITTENTLY FROM THE EXHAUST. AIRCRAFT RETURNED TO BASE. THE FUSELAGE AND STABILIZER WERE COVERED WITH OIL. FURTHER INSPECTION FOUND THE ENGINE CRANKCASE CRACKED. THE ENGINE WAS REPLACED.