What was found
(CAN) - ENGINE INSTALLED AFTER OVERHAUL GROUND RUNS COMPLETED, STATIC R.P.M., 0.1 PRESSURE AND OIL TEMPERATURE NORMAL, ENGINE CONTROLS FUNCTIONING NORMAL.- FIRST FLIGHT WAS APPROXIMATELY 12 MINUTES AIR TIME AND SEEMED TO RUNSMOOTHLY. - SECOND FLIGHT WAS CONDUCTED AND AIRCRAFT STARTED TO MAKE NOISES AND VIBRATE DURING THE LEFT TURN OUT FROM THE CIRCUIT. SHOT DOWN WAS COMPLETED AND PILOT WAS ABLE TO LAND AT AIRPORT. - ENGINE INSPECTION FOUND CENTRE CYLINDER ON PASSENGER SIDE, PISTON NOT MOVING. ENGINE REMOVED.