As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE SEIZED IN-FLIGHT WITH NO WARNING (APPROX 5 SECONDS OF ROUGH OPERATION). PILOT MADE UNEVENTFUL LANDING IN THE FIELD. ENGINE WAS REMOVED AND DISASSEMBLED. CRANKSHAFT FOUND BROKEN IN TWO BETWEEN NR 3 AND NR 4 CONNECTING RODS. ENGINE INSPECTED FOR PROP STRIKE 253.8 HOURS PRIOR.