As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CANNED ENGINE FROM AIRCRAFT (IN HEAVY CHECK), DOING VISUAL INSPECTION ON PROP PITCH CONTROL INSTALLATION AND NOTICED A CRACK IN HOT SECTION CASE WHERE REAR BEARING SCAVENGE TUBE IS LOCATED (APPROX 3 O’CLOCK POSITION) THIS HAIRLINE CRACK IS APPROX 1.25 INCHES IN LENGTH AND DOES NOT APPEAR TO GO THROUGH TO THE INNER CHAMBER WALL. REJECTED ENGINE WILL BE SENT TO VENDOR FOR REPAIR. (K)