As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT CRANKCASE HALF FROM PARTING SURFACE LOWER NR 3 BOLT HOLE HAS 1 EACH .25 INCH CRACK FROM BOLT HOLE TO PARTING SURFACE, AND 1 EACH 1.850 INCH CRACK FROM BOLT HOLE INTO CASE WEBBING. SUBMITTER CANNOT DETERMINE THE CAUSE OF CRACK. NOTE: THE PROPELLER GOVERNOR OIL LINE AND THE GENERATOR HAD TO BE REMOVED BEFORE THE CRACK AREA WAS VISIBLE.