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Task: Drilled lower fuselage skin at wing root
we redrilled the right F-796A tank attach bracket. It had been
misdrilled initially and the hole became elongated. The rest
of the evening was spent making the flap cutout holes.
Van's provides no instructions regarding the flap cutout holes.
They don't give you any clue as to exactly what shape to make
them. After looking on several builders websites I found one
that I liked. Essentially you start by drilling the punched
holes out to about 1/4".
The finished product is a half-moon shaped hole on the side-skin
and an odd shaped oval hole on the bottom.
I filed and filed and filed some more untill the flap came up
to the bottom of the fuse skin and matched up with the aileron
in an in-trail position.
Finally, after a whole lot of filing, I connected the flap to
the actuator and found it moved the flap up and down very well.