09-05-2012: 3.5 hrs
Put the bottom skin back on. I haven't really drilled any holes on the bottom skin yet, and there are some holes on the side skins and longerons that need to be drilled with bottom skin. So the first thing I did is to drill these holes. Then I installed the floor stiffeners. I had to do it solo, it is very frustrating at beginning. After a little thinking, I just clamped the center two stiffeners to firewall and the bracket on F704, the drilled them. The holes are not perfectly at the center line, but very close. For the outer two stiffeners, I had to drill one end hole, then clecod them to floor, then very carefully drill the holes one by one, making sure the holes are close to center line. All turned out to be good.
Bottom skin and side skin are drilled
The bottom (top in picture) need to be drilled to #12 and countersunk for #10 screw
The lower longeron looks pretty good from inside
Floor stiffeners are fitted in
Floor stiffeners are drilled
The end has to be trimmed to fit
The other trimmed stiffener end
Close up view of the floor stiffener to F704 flange
Bottom skin and side skin are drilled
The bottom (top in picture) need to be drilled to #12 and countersunk for #10 screw
The lower longeron looks pretty good from inside
Floor stiffeners are fitted in
Floor stiffeners are drilled
The end has to be trimmed to fit
The other trimmed stiffener end
Close up view of the floor stiffener to F704 flange
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