Do you assemble your glider paying good attention to it?

Contestid67 wrote:

2) The NTSB report says that the wing separated 'at
the
wing-to-fuselage attachment point.' Wrong, it was clearly
outboard of that. Seems like an odd place for a multi
part wing to be coupled.

- John

The glider in the video has a 3 piece wing. The connection
where the wing seperated is the tip of the center section
and the root of the outer panel.

I have helped put one of these together. I do not
know if the wing would stay in place if the 'pin' had
not been rotated to expand and lock. A very worthwhile
test for the FAA to have run would have been to fully
extend the pins, then apply load like the spar would
have, and see if the pin would push out of the way.
If the pin is tapered, and the screw that drives it
into place allowed the pins to spin the jackscrew,
that could certainly have caused the pin to back out
under load. Since the aircraft has been sold for salvage,
we will probably never know.

Steve