I began working on the center section of the fuselage. I inserted AN4 bolts into the aft bulkhead and aligned it with the center section. I clecoed the assembly to the bottom skin per the directions and allowed the parts to self-align then re-clamped them together.
I began match drilling the #30 holes into the center section channel. There are 72 holes that were match drilled into the channel.
I pulled out all of the clecoes and deburred the holes after removing the blue vinyl from the rear bulkhead.
