As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE FAILED DUE TO CONNECTING ROD FAILURE AT THE NR 4 POSITION. AREA OF WHICH ROD MAY HAVE INITIALLY FAILED, COULD BE RELATED TO LYCOMING SB 439A (INSPECTION OF CONNECTING RODS FOR FRETTING AND/OR GALLING). THE ABOVE STATMENT WAS WRITTEN AFTER DISASSEMBLY OF ENGINE.