What was found
STARTER ADAPTER HOUSING MAIN BEARING FAILURE, RESULTS IN EXCESSIVE PLAY TO REAR ENGINE GEAR ASSEMBLY ADVISE UPGRADING TO BETTER STYLE OF BEARING DESIGNED FOR BETTER LOADS. PROVIDE A 500 HOUR INSPECTION THAT MIGHT REQUIRE REMOVAL AND INSPECTION OF BEARING TO PROVIDE BETTER SAFETY MARGIN. THIS UNIT HAD ALL UPDATES PRIOR TO FAILURE. HAVING A SPINNING VISCOUS DAMPENER MAY HAVE HAD SOMETHING TO DO WITH ADDED VIBRATION CAUSING BEARING FAILURE.