Chapter 19 - Step 12

This step involves drilling 1/4" pilot holes through the hardpoint of the wings and spar.

Outboard pilot holes February 12, 2004. Here are the 1/4" pilot holes drilled through the outboard hard points of the spar. The first step was marking the location of the holes on the spar and wing and then making sure they all lined up. Mine were very close. One was off less than 0.1". Pretty good considering the wings and spar hardpoints were made two years apart.

Inboard pilot hole February 12, 2004. The 1/4" pilot hole in the inboard hard point.