F21-01 Fuselage Tail Cone Box.
I riveted the clips to the back of the Cross Tie Box. F23-05 Left and Right Hand Mounts. I clamped the assemblies in place and drilled #40 pilot holes and up drilled to #30 all the holes. I deburred the Left and Right Hand Mounts. I also deburred Upper Cross Ties #2 thru #4. I clecoed the Cross Ties inplace. I riveted the 5 holes on each corner that get get riveted now. There are seven holes on each corner that do not get up drilled and riveted until the turtle deck formers are installed. I riveted the Left and Right Hand Mounts in place. I also riveted the tops of Cross Ties #2 thru #4 through the Longerons.

Click on a picture to enlarge it: