Step 8: Except for the holes common to the F-1231D's pointed out in Figure 1, machine countersunk the outer flanges of the F-1231A-FL, -FR, -AL and -AR for the heads of the rivets that will eventually lay underneath the canopy. Step 9: Machine countersunk the C-01213A for the heads of the rivets called out in the detail view of Figure 2.
Completed step 14 Step 14: Clecoed the roll bar assembly back together, then clecoed it to the F-1231D's using the forward facing holes.
