As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT DEPARTED, SHORTLY AFTER TAKEOFF, THE ENGINE LOST POWER AND THE ACFT MADE AN EMERGENCY LANDING ON HWY 254. NO DAMAGE TO THE ACFT, AND NO INJURIES TO THE OCCUPANTS. TEARDOWN OF THE ENGINE REVEALED THE CRANKSHAFT HAD BROKEN AT THE (4TH) BEARING FROM THE FLANGE. THE CRANKSHAFT COUNTERWEIGHT HAD ALSO IMPACTED THE CAM SHAFT AND BROKE IT INTO (3) PIECES. ANALYSIS OF THE CRANKSHAFT WILL BE NEEDED TO DETERMINE ANY METALLURGICAL FLAWS.