What was found
IN FLIGHT FAILURE OF CRANKSHAFT. CRANKSHAFT SEPARATED AFT OF #2 MAIN BEARING. THERE WAS SEVERE DISTRESS OF THE #2 MAIN BEARING, CRANKCASE INTERIOR AND THE LOWER PART OF CYLINDERS 1 AND 2. ENGINE IMMEDIATELY LOST POWER. FORCED LANDING WAS SUCCESSFULLY PERFORMED IN SAMBURU COUNTY, NORTHERN KENYA WITH NO INJURIES AND ONLY MINOR DAMAGE TO THE AIRCRAFT.CRANKSHAFT FAILURE POTENTIALLY CAUSED BE #2 BEARING DISTRESS NOTED UPON DISASSEMBLY. ENG TOTAL TIME OF 1,574.6, OUT OF A TBO OF 2,200 HOURS. ENGINE AND PROP INSTALLED IN THIS AIRCRAFT IAW STC SA02507AT-D.AIRCRAFT WAS RECOVERED BY ROAD AND TAKEN TO NAIROBI, FOR DISASSEMBLY OF ENGINE, TO ASCERTAIN FAILURE.