Cleco'd vertical channels #1 thru #5, upper and lower longerons, and splice plates to the left and right aft fuselage side skins, then updrilled vertical channels #2 thru #4, lower longerons, and lower splice plates while cleco'd to the aft fuselage skins. The right and left aft fuselage side skins, longerons, and splice plates were disassembled and deburred. The parts were reassembled and the lower longerons were riveted followed by the #2 thru #4 vertical channels to the aft fuselage side skins, and two bolts each for the lower splice plates on both right and left side skins were torqued to 25 in lbs. The upper longerons and vertical channel #1 for both aft fuselage side skins will be updrilled on a later assembly.
