As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED LT ENGINE QUIT ON SHORT FINAL. ENGINE FEATHERED ITSELF AND LANDED SAFELY. THE CRANKSHAFT AND CRANKCASE HAD BROKEN BETWEEN NR 4 AND NR 5 CYLINDER. THIS REAR PART OF THE ENGINE WAS SEPARATED FROM THE REST OF THE ENGINE. (K)