As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE BEGAN RUNNING EXTREMELY ROUGH AND PRODUCED ONLY PARTIAL POWER. MADE A PRECAUTIONARY LANDING WITHIN 5 MINUTES. ON TEARDOWN, DISCOVERED NR 2 MAIN BEARING HAD SPUN AND CUT OIL TO NR 3 ROD BEARING WHICH OVERHEATED. NR 3 AND NR 4 RODS SEPARATED FROM CRANK AND KNOCKED 3 HOLES IN CASE.