Brief Description: Fuel tank access plate and ribs
I then removed the acces plates and replaced them with the 407 stiffener ring and drilled the rivet holes on both ribs. I also countersunk the rivet holes for the fuel tank sender in both access plates. I countersunk the two stiffener rings (407). I edged and deburred all freshly drilled holes in the access plates, stiffener rings and the ribs. I dimpled the ribs and tested the dimples with the stiffener rings to check that they fitted correctly. All o.k. I then clecoed the nutplates toe th erib/stiffener rings, and also the access plates.
Ribs/access plates with nutplates clecoed in place
