Match drilled #40 the 3/32 holes in the left F-823 Mid side skins that are common with the F-887 L upper longeron. Final drilled #30 the 1/8 holes in the left F-823 Mid side skins not drilled in earlier steps Final drilled #40 the 3/32 holes not drilled in the aft end of the F-826 right and Left center bottom skin Final drilled #40 the 3/32 holes in the F-842-1 Aft bottom skin Final drilled #40 the 3/32 holes in the F-828-1 Aft bottom skin Match drilled #40 the 3/32 holes in the 824-L-1 aft side skins which are common with the F-887-L-1 upper longerons Final drilled #40 the 3/32 holes in the F-824-L-1 aft side skins that are common with the left F-888-1 aft mid longeron and F-889-1 aft lower longeron. Final drilled #40 all 3/32 holes not drilled in the previous steps on the left aft side skin
