I am trying to solve two mysteries with the fuel tanks. Both are dimpling related.
1. I don't see a step that actually says to dimple the #19 holes around the fuel tank skins. Page 18-03 step 11 says to dimple the skin as shown on page 18-05 figure 1. The figure does not clearly indicate that the #19 holes should be dimpled. It appears that they should be. Am I correct that I should do so at this stage?
2. Two of the #19 holes are marked on page 18-05 figure 1 as "do not dimple." These are the top and bottom of the subassembly, and line up with the MS21051-L08 nutplates. Looking forward in the plans to the wing installation, flush screws are shown in this position, attaching the wing root fairings to the wings. Specifically, it looks like the upper wing root fairing goes here, and on page 41-04 step 12 we are to dimple all of the holes in that part. Any ideas on what I'm missing to understand why these holes are not dimpled or countersunk?
1. I don't see a step that actually says to dimple the #19 holes around the fuel tank skins. Page 18-03 step 11 says to dimple the skin as shown on page 18-05 figure 1. The figure does not clearly indicate that the #19 holes should be dimpled. It appears that they should be. Am I correct that I should do so at this stage?
2. Two of the #19 holes are marked on page 18-05 figure 1 as "do not dimple." These are the top and bottom of the subassembly, and line up with the MS21051-L08 nutplates. Looking forward in the plans to the wing installation, flush screws are shown in this position, attaching the wing root fairings to the wings. Specifically, it looks like the upper wing root fairing goes here, and on page 41-04 step 12 we are to dimple all of the holes in that part. Any ideas on what I'm missing to understand why these holes are not dimpled or countersunk?