One by one disassembled upper & lower cross ties from verticals and deburred, cleaned, and cleco'd back to verticals. Then I flipped aft fuselage over (bottom side up) and cleco'd the bottom skin to the bottom longerons to help keep everything square. Riveted one by one (working aft to forward, lower to upper) the cross ties to the verticals. Took bottom skin off and flipped aft fuselage over (top side up) and riveted seat belt mounts to upper longeron and upper cross tie #3. Also riveted ends of cross ties #2 thru #4 to upper longerons (detail D & detail F Manual Ref SNX-F21).
Lower Cross Tie Riveted to Vertical
Upper Cross Tie Riveted to Vertical
Seat Belt Mounts Riveted to Upper Longerons & Cross Tie
