As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON AIRCRAFT, BECAUSE OF A CRACK FOUND ON ANOTHER ENGINE, DECIDED TO INSPECT AND FOUND A CRACK ON THE RIGHT FRONT SIDE OF THE ENGINE CASE AT THE ALTERNATOR MOUNTING FLANGE AREA. THE CRACK STARTED ON THE ALTERNATOR REAR MOUNTING CASE THROUGH BOLT. THIS CRACK IS ABOUT 2 INCHES LONG. A REPLACEMENT ENGINE HAS BEEN ORDERED.