- Updrilled all the holes for the forward attach brackets at the top of the fuselage (photo #1).
- Installed 4 AN bolts (2 per side) -- (photo #2). The nuts are located inside the cross tie box and were bear to get in place and to tighten and torque. The plans called for a total of 2 washers on each bolt, but I needed 3 total (one on top; 2 underneath), otherwise the nut was grounding itself on the shank.
- Installed the cross tie box support brackets (in progress, photo #3).
All of this took time because of assembly, disassembly, deburring, and reassembly. But this completes Sheet F21 for the Tail Cone Box.
Must holes are up drilled to 1/8". 2 are updrilled to 3/16" for AN bolts.
With fuselage on its side, the AN bolts installed and bracket riveted.