K-P garage, you are right, the actual failure scenerio is not precisely known. Thats why it is IMPORTANTfor as much axle bolt failure info be posted by those owners experiencing a failure as possible. Miles on the bolts, failure events speeds, gears etc, replacement parts used, servicing dealership, second failure etc. Trying to design a fix for something that breaks without knowing WHY it breaks is almost impossible ergo the delay in Ford issuing an "end-all" fix. The bolt breakage cannot be regularly repeated and the loads on the bolts are not sufficient to cause concern. The failure mechinism has to be pinpointed and quantified to correctly design a solution. Data is the key.....
Thanks Gimbel, I agree with your post. Hope you can attend the technical session at the national event.