Brief Description: Starting to assemble the left aileron
21-5 , Steps 4 & 5, Attach the nose ribs to the counterbalance tube via screws, riveted the nose ribs to the aileron leading edge skin. Back riveted the stiffners to the aileron skins (all four)
21-6, Steps 1 & 2, Riveted the spar to the nose ribs, cleco'd the top skin to the spar and leading edge skin.