What was found
WHILE IN CRUISE CONFIGURATION AT 16500 FEET, 32 INCH HG/2200 RPM THE PILOT NOTED A SHUTTER FOLLOWED BY A DROP IN MANIFOLD PRESSURE RESULTED. WITHIN 60 SECONDS THE MANIFOLD PRESSURE FLUCTUATED RAPIDLY, FOLLOWED BY A LOUD BANG. THE ENGINE WAS SECURED AND AN UNEVENTFUL LANDING FOLLOWED. INSPECTION OF THE ENGINE REVEALED THE NR 5 CYLINDER ASSEMBLY HAD SEPARATED FROM THE ENGINE. THE PISTON AND CONNECTING ROD WERE ATTACHED AND IN THE CYLINDER, THE ROD CAP HAD SEPARATED AND WAS FOUND IN THE CRANKCASE.