F11-01 Fuselage Box Assembly.
I pilot drilled and clecoed the top where the Forward Tunnel Zee and the Aft Tunnel Web Assembly join.
I located, pilot drilled and clecoed:
F16-08 Side Clips,
F17-08 Firewall Stiffener,
F17-09 Floor Stiffener,
F17-11 Gusset,
F17-10 Upper Clip and
F17-12 Aft Clip.
For the Upper Clip I had to make a spacer to fit the radius of Upper Cross Tie. I also removed and reinstalled the firewall to gain better access for drilling the Upper Clip. Since I had access I went ahead and up drilled the upper clip and part of the gusset.


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