W07 Wing Box - Right Hand Wing - I drilled all the remaining #40 pilot holes in the main spar for the upper and lower aft skins. I also up drilled to #30 size many of the holes for both upper and lower aft skins. I did not up drill the rear and main spar row of holes. I also did not up drill where the root doubler will go. I also left a few rows near the main spar. I located the forward skin and drilled the #40 pilot holes for the upper portion of the forward skin.

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