Brief Description: Back Drill through W425 Left and Right
I will remove the outward bottom skin enough to reach and back drill 9 holes through the W425 cross brace into the top skin. These braces stiffen the bell crank assembly area. The cross brace that attached to the bottom skin was easy to back drill because at the time there was no top skin yet to interfere a couple days ago. That does it for the 4 main wing skins plus the wing walk doubler plate. I need to get the vacuum going and suck up all these aluminum shavings. They get everywhere when you are in production mode. On to the leading edge skin. Then I will make the fuel tank.
