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Stevens Web Site
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Date: 6-19-2006
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Number of Hours: 2.90
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Manual Reference:
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Brief Description: Installed left flap brace and aileron gap seal
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The plans say to drill and rivet the flap braces and the aileron gap seals onto the rear wing spars, but there is very little direction about how to go about doing so. The directions say nothing about having to trim the flap brace to fit beneath the spar doubler, but the plans (not even the sheet called out in the directions) show that it must be trimmed between two notches. Then, I trimmed the right flap brace as per the plans and one of the rivet holes wound up too close to the edge. Without the proper edge distance (twice the diameter of the hole) the brace is liable to crack at the hole. I called Vans and Gus told me to just place another rivet about 1/4 in. from the errant hole. Back in the shop, I trimmed the left wing flap brace with a lot more care to preserve the edge distance. I cut enough of the brace to clear the spar doubler, but not too much. I also learned from Jaimie Painter that you need to drill and dimple the wing skins (where they attach to the flap brace and the aileron gap seals) now, because it will be impossible to do so once they are riveted to the rear spar. So, I did the DDSD&P (Drill, Debur, Scuff, Dimple and Prime) to the left wing pieces. Tomorrow, I will rivet these pieces in and then tackle the right wing.
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Aileron gap seal clecoed in
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Rivet hole too close to the edge on the right wing flap brace
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Left wing flap brace and aileron gap seal all prepped and ready to rivet
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