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On the topic of seat pans sliding forward, I just looked at mine and there
appears to be no way for the seat pans to slide forward on their outboard
sides, due to the presence of the load transfer pads.  My seat pans are
trimmed fairly close to the pads, so the seat pans can't slide forward more
than 1/8 inch, if that far, unless the seat pan were to ride up vertically
about 1 inch and scoot OVER the load transfer pad.

On the inboard side there's nothing to preclude the seat pan from sliding
forward.  However, the seat pan would have to rotate around the load transfer
pad for the inner edge to slide forward, and it looks like the console would
keep it from rotating.  Thus it would jam up on the console at the aft,
inboard edge, slightly cattywampus.

Still, it happened to Lorn Olsen, and I suppose it could happen again.

My current plan is to bond a 90 degree 3-BID flange onto the bottom of the
seat pan, which would capture on the aft edge of the upper spar cap if the
seat pan started to slide forward.  The flange would have to be long enough
to engage the spar cap if the seat pan were merely laid on top of the 3-BID
flange (as happened to Lorn).  The flange would not run full length -- just
an inch or two at the inboard and outboard edges of the seat pan.  Note that
this will not keep you from incorrectly installing the seat pan, but it will
keep the pan from sliding forward if you do.

I haven't yet mocked it up to verify that this will work, but it seems like a
simple retrofit, and suitable even for completed Lancairs.

- Rob Wolf
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