I spent a bunch of time match drilling the elevator
stiffeners to the skins. I also work away on the E-615PP trim access
reinforcement plate. I dimpled the #6 screw holes, and then I set out to read
up on what to do with the attachment holes for the corresponding K1100-06
nutplates. Obviously the rivets need to be the #426 flush type. I'm just not
sure if I need to dimple or countersink. I see that a few folks have
countersunk the reinforcement plate. Being that the material is 0.032"
thick it is at the minimum recommended thickness for countersinking. I see that
some people have opted for the oops rivet which keeps the smaller head but uses
the larger #4 shank. I decided to countersink the reinforcement plate and then
take it to my EAA meeting next week so I can have the guys take a look at it.
UPDATE - Well seems I made another mistake. I didn't quite understand that the oops rivet substitution that the Vans manual describes, and other folks have used is to replace the 426AD3-3.5 rivet that is called for with a NAS1097AD3-3.5 rivet.
I had it in my head to use an NAS1097AD4-X rivet which is wrong! I had countersunk this piece too deep. Now to start again!
