Pg38-16 Support Flange splice

[HAL Pilot]

OK brain trust, I cant get my head around step 4 and step 17.

By countersinking the splice we end up making a flush surface behind the 1404 support flanges so they end up out of view unless the canopy is open. Then we make a domed shop head for aesthetic purposes on the side that we see. I'm sure there is a reason I just cant find it at the moment. Why are we making the forward side flush?

Thoughts?

Thx

 

[tfriske]

Is it just so that there is no shop head in your way when you go to buck the skin rivets onto the top flange? The splice plus a shop head would be crowding those holes quite a bit.

 

[Phil Sprang]

Because that flange fits over the top of your instrument panel. It needs to be flush on the fwd side or it will scratch your panel paint