What was found
DURING FLIGHT, THE PILOT NOTICED A 20 KNOT LOSS UNDER MAXIMUM CONTINUOUS POWER. UPON LANDING AND INSPECTION, OIL SPRAY WAS FOUND ON RIGHT SIDE OF ENGINE AND FIREWALL. OIL QUANTITY, PRESSURE, AND TEMPERATURE INDICATORS WERE IN THE GREEN. OIL CONSUMPTION WENT FROM 8 QTS TO 6.5 QTS DURING TWO HOURS OF FLIGHT TIME. ONE OF THE CYLINDERS WAS FOUND CRACKED. FOUR CYLINDERS WERE REPLACED AS A PRECAUTION.