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Lower Longeron machine countersinking

beezee

Active Member
Hi

I did some searching but didn't find anything yet. While preparing to dimple today on the fwd fuselage assy I realized that I made an error during a machine countersink frenzy the other day.

There are meant to be 5 per side 426 rivets on the bottom, and the rest 470.

Let's just say someone got ambitious and countersunk the whole line of holes on the bottom of the lower longeron for flush rivets...that'd probably be fine there right as long as I dimpled the fwd floor to match?

EDIT: **Basically, do we think it'd be fine to have AN426AD4-6 for the entire length of the F-843-L/R-1 to F-822-1 joint, instead of the AN470AD4-6 that is called out for all but 5 spots?**

I'll be talking to Van's in the morning if I don't run into anything definitive here.

Thanks all!
 
Last edited:
answer

Vans says build on.

Come to think of it, I might get a little more speed. We all know the hidden flush rivets make all the difference.
 
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