We did install a couple inspection holes on both Leu Treehugger and DE Stubby, one near the inner aileron hinge pin and the other near the wing strut attachment to the wing spar. Pic of aileron area DE inspection hole attached.
During an annual inspection of the DE, I found the aileron inner pivot bolt slightly turning when the aileron was cycled. During construction, this bolt was epoxied in the wood block, and a safety wire was run through a hole in the bolt head and through the wood block. I was concerned that, with enough turning back and forth with aileron movement (many thousands, perhaps?) that the safety wire could break and the aileron pivot bolt could work loose, resulting in a disengaged aileron.
So, I modified the inner aileron attach bolt with a "Z" shaped metal strap, one end welded to the bolt head, the other end secured to the rib with a countersunk screw and elastic nut. Pic of this attached.
