As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TEARING DOWN THE ENGINE IN QUESTION IT IS OUR OPINION THAT THE FAILURE WAS DO TO OIL STARVATION OF THE NR 5 CYLINDER CONNECTING ROD CAP FOR UNKNOWN REASONS. THIS CAUSED FAILURE OF THE ROD CAP BOLTS. THE CAP BOLTS STRETCHED, SNAPPED AND THEY SHOW SIGNS OF BURN MARKS.