What was found
(CAN) SOON AFTER TAKEOFF ENGINE STARTED VIBRATING ABNORMALLY, VIBRATIONS GOT WORST AND PILOT DECLARED AN EMERGENCY AND LANDED SAFELY ON AIRPORT RUNWAY. PRIMARY INVESTIGATION SHOWS CYLINDER #3 NOT SECURED TO CRANKCASE. EFFECT OF VIBRATIONS SHOWS BROKEN EXHAUST, LOOSE INTAKE TUBE, LOOSE OIL RETURN LINE AND OTHER MINOR DAMAGES. ENGINE WILL BE SENT TO ENGINE REPAIR SHOP FOR INVESTIGATION TO FIND THE CAUSE OF THE PROBLEM. (TC# 20190509011)