What was found
NOTICED OIL ON NOSE COWL. PROP REMOVED TO REPLACE CRANKSHAFT O-RING. BUT DURING REMOVAL, IT WAS DISCOVERED THAT THE SEEPAGE WAS ACTUALLY COMING FROM A BLADE. SEEPAGE WAS CONSIDERED MINOR AND PROPELLER OPERATION APPEARED NORMAL. REPAIR SHOP DISCOVERED DURING DISASSEMBLY THAT 1 BLADE WAS FROZEN. FURTHER INSPECTION FOUND THE BEARING RACE BROKEN AND ABOUT 1 IN MISSING. THE BLADE HAD A SIZEABLE GOUGE AS WELL AS THE HUB. ALSO, 95 OF THE BALL BEARINGS MEASURED THE PROPER SIZE OF .4687". HOWEVER 1 BEARING MEASURED 16/32" (.5"). THE BLADE AND HUB WERE NOT REPAIRABLE. IT APPEARS THAT THE OVERSIDE BEARING CAUSED THE DAMAGE AND THAT A COMPLETE FAILURE OF THE PROP WAS IMMINENT.