Sequoia Aircraft Corporation F.8L Falco, Construction Manual

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F.8L Falco Construction Manual 22–11 Revision 4, March 1, 2002
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Trace the outline of the spar, ribs and leading edge strip on the under surface of the upper
leading edge skins in preparation for varnishing. Locate each skin with a couple of
“alignment pins”—little nails driven through the skin and just barely into a couple of ribs.
This will insure that the skin will be glued in the same place.
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Mark the spar and make a small sawcut at the trailing edge to mark where the two control
surfaces will be cut apart. The skinning will completely cover the joint between the
aileron and flap. You do not want to lose track of where to cut.
Figure 16
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Turn the aileron/flap assembly around so that its lower surface faces away from the jig
table. See Figure 16. Clamp in place and check the alignment. It is particularly
important that you make sure that the spar is not bowed—lower or higher in the
middle—since the next step will stiffen the assembly in that direction.
Figure 17
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Fit and install the lower leading edge skin between Sta. 2 and 6. See Figure 17. The skin
should extend all the way to the inboard end of the flap spar. Before installation, scarf for
the joint for the trailing edge skin and the next outboard skin.
Figure 18