Working on the tailcone

Now that fall is here and winter is not too far off, I have resumed work on the tailcone. I have to drill all of the holes in the longerons and bulkheads. Then I will put the skins on and strap everything down and backdrill the skins. This the best way to get the skins drilled since you know your holes are all in the center of the longerons and bulkhead flanges. Blind drilling is not easy and you can get off center.

After that, then it's on to the bottom skins. All of the bottom skins will be .032 for some added strength and a better finish.