As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION, FOUND CRANKCASE CRACKED FROM EDGE OF NR 2 CYLINDER FLANGE TO FORWARD CORNER AT CYLINDER BASE STUD. EDDY CURRENT INSPECTION VERIFIED CRACK TO BE SUBSURFACE. VISUAL INSPECTION SHOWED NO CRACKING ON INSIDE OF CASE. THE CRACK WAS APPROXIMATELY 1.50 INCHES LONG. ENGINE REPLACED. (X)