As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING INSPECTION, WE NOTICED A SMALL BLACK LINE ON FRONT RT CASE, AFTER THE AFFECTED AREA WE FOUND THAT THE LINE HAD DISAPPEARED. AFTER RUN-UP WE NOTICED THAT THERE WAS STILL A LITTLE BIT OF SEEPAGE ON THE CRANKCASE. ENGINE WAS REMOVED AND SENT TO THE ENGINE O/H SHOP AND THEY CONFIRMED THAT THE CRANKCASE WAS CRACKED.