November continues with the mid fuselage ribs and bottom skin section. There is a lot of parts prep involved as this is a very big section. Building progresses with the construction of the baggage area aft of the center bulkhead. this includes many ribs and flooring. After the aft area is installed on to the center bulkhead the forward area is fabricated. This includes seat ribs, seat pans, and forward bulkheads. The section finishes with the installation of the bottom skin. Skills used in this section included, deburring of parts, match drilling, dimpling, machine countersinking, rivet and bolt installation and installation of nutplates.