What was found
AFTER ONE HOUR FLIGHT WITH LANDING. ON GROUND FOR 45 MINUTES, PREFLIGHT, CHECK OIL QTY, 5.8 QTS, STARTED ENGINE, TAXI TO RUN UP AREA, ENGINE RUN UP NORMAL, NORMAL TAKEOFF, APPROXIMATELY 100 METERS PILOT FELT SOME ENGINE VIBRATIONS, SMELLED OIL IN COCKPIT, SAW OIL ON THE WINDSHIELD, ABORTED TAKEOFF AND IN THIS MOMENT STARTED TO FEEL HIGH VIBRATIONS, LANDED AND STOPPED ENGINE. DURING INSPECTION OF THE ENGINE, OIL COVERED ENGINE, SAW A CRACK IN THE NR 3 CYLINDER BARREL. CYLINDER DID NOT SEPARATE.