As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTICED OIL SEPPAGE BETWEEN THE HEAD AND BARREL OF THE NR 5 CYLINDER BETWEEN THE PUSH ROD TUBES DURING THE FIRST OIL CHANGE. DURING THE SECOND OIL CHANGE, NOTICED A SUBSTANTIAL INCREASE IN OIL LEAKAGE AT THE SAME PLACE ON THE NR 5 CYLINDER, ALSO NOTICED OIL LEAKING FROM THE NR 3 CYLINDER IN THE SAME AREA. BOTH CYLINDERS REPLACED AND RETURNED TO MFG.