Drilled longerons for nutplates to attach rear seat cover panels then countersunk fwd attach holes for #8 screw per plans. Deburred and primed longerons and countersinks. Clecoed splice plate to aft tunnel cover and final drilled for rivets and screws. Final drilled #19 all screw holes then deburred and dimpled all parts per plans. Riveted seatback brace in place. Final drilled flap torque tube covers. Deburred and dimpled as required. Final drilled fwd fuse wire covers then deburred. Final drilled mid cabin side covers then deburred and dimpled per plans. Final drilled engine mount lower bolt access plates then deburred. Prepped and primed all parts. Riveted nutplates and splice plate to all covers and longerons as required per plans for cover installations.
