Fuselage - Center Section

2005-08-21 - Preparing the center Fuselage. (5.0 Hrs).

Finally, a little progress. Four hours, four ribs deburred. One more hour, nutplates installed, and the center section starts to take shape.

Four more ribs--finally done. BTW, the F-715 ribs are pretty thin, so the deburring was a lot easier.

Now, on to the nutplates. Another nutplate factory line starting up. I did these a little different than my usual slow process, where I put a screw in the middle for alignment, cleco one side, drill and countersink the other, move the cleco, drill and countersink the other hole. Nutplates really do not require that much accuracy. Basically, I drilled all three holes without the nutplate and deburred. Then I countersunk one hole on each nutplate, and set the rivet. Finally, I countersunk the remaining holes and set the rivet. Probably doesn't save much, but it felt simpler.

This rib is done.

The holes needed to be drilled for the snap bushings for electical wiring.

Finally, something that is starting to look like the center section.

	Four more ribs--finally done. BTW, the F-715 ribs are pretty thin, so the deburring was a lot easier.
	Now, on to the nutplates. Another nutplate factory line starting up. I did these a little different than my usual slow process, where I put a screw in the middle for alignment, cleco one side, drill and countersink the other, move the cleco, drill and countersink the other hole. Nutplates really do not require that much accuracy. Basically, I drilled all three holes without the nutplate and deburred. Then I countersunk one hole on each nutplate, and set the rivet. Finally, I countersunk the remaining holes and set the rivet. Probably doesn't save much, but it felt simpler.
	This rib is done.
	The holes needed to be drilled for the snap bushings for electical wiring.
	Finally, something that is starting to look like the center section.