As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRANKSHAFT WAS FOUND CRACKED AFTER PRECAUTIONARY REMOVAL FOLLOWING RECENT ENGINE OVERHALL (8.8 HRS). CRANKSHAFT WAS PROCESSED BY REPAIR AGENCY PRIOR TO INSTALLATION. SUSPECT PART MAY HAV BEEN IMPROPERLY MACHINED. CRACK WAS AT NR 5 JOURNAL RADIUS APPROX 2.50 INCHES IN LENGTH.