[CFI1513840]

The AB4-125X1 1/2 aluminum bar provided to fabricate F-705B was badly scored along one edge, as well as the F-605C spar doublers (same material). Vans was very good about replacing the parts free-of-charge. The only problem was the replacements weren?t much better than the originals. I decided to remove scoring with a scotchbrite wheel, removing up to about 1/64" depth at the edge, tapering back to about 1/4" from the edge. I'm hoping this doesn't compromise the integrity of the spar bars but would appreciate any comments or suggestions.

 

[N282RV]

IM no engineer but...

If you blended it out as you say I can not imagine 1/64 being something to worry about. that is provided you got rid of all of it so as not to have a stress riser there. My .02 is build away. You have a lot of meat left there to work with.
I found a similar mark on my elevator push pull tube, long after my 30 day inventory was done but I know it came shipped that way so I buffed it out and was not happy, called vans and while they would not replace for free I did get it at their cost, I was happy as it didnt matter to me I was replacing the part to make me feel good. The torque tube does not have near the meat that spar stiffener has so anyway Id go with it.

 

[CFI1513840]

Thanks

Jeremy,

Thanks for the advice. You confirmed my opinion, which is to continue on after removing all of the marks. I was also curious to know how many other builders have experienced this defect, but based on the lack of comments, I can only assume this is a rare exception.