As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENGINE INSPECTION, TECHNICIAN TRACED OIL LEAK TO A CRANKCASE CRACK IN THE AREA OF THE ALTERNATOR MOUNT BOSS. CRACK IS IN THIS AREA OF RIGHT CRANKCASE HALF LESS THAN .25 INCH FORWARD OF SECOND CRANKCASE BOLT HOLE (FROM FRONT OF ENGINE). NEW ENGINE BEING INSTALLED.