As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS CONSUMING A LARGE QUANTITY OF OIL. UPON INSPECTION, FOUND THE NR 3 CYL OIL CONTROL RING LAND ELONGATED DUE TO A SMALL PIECE OF RING WHICH HAD PIECE OF RING WHICH HAD BROKEN OFF AND BEGAN TO FLUTTER. PROBABLE CAUSE: SHOCK COOLING.