SECTION 21: AILERON

Build Instruction Updates

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Page 21-03

Consider deferring the riveting of A-1007-1B and A-1006-1B plates to the A-1005A-1 ribs until after the top skin is attached to the spar on page 21-08. This will allow for better access to the spar attach rivets that end up being inside the hinge brackets. Just be sure to attach them before the bottom skin gets attached.

Page 21-04

Consider buying a Cobalt drill bit for drilling into the stainless steel counter-balance tube.

Page 21-05

Step 3: The aileron counterbalance pipe is made from stainless steel and is much harder than aluminum. When match drilling the aileron counterbalance attach holes through the nose skin it is easy for the bit to wander and significantly enlarge the pre-punched holes in the nose skin. Drill slowly, checking often that you're centered especially when starting to drill the holes. Another option would be to just mark the holes in the counterbalance and remove the skin before drilling the holes.