Once outside the Light Sport Airplane limits,
it's always outside and can't be brought back inside the LSA
limits.


Several people mentioned this, but I don't recall ever reading this anywhere
else. Can someone provide a reference to a published rule that states this?

My understanding is that it would be possible to take an experimental
aircraft, and modify it so that it would meet the limitations of the sport
pilot. I even asked AOPA this exact question about this a week or so ago,
and their opinion was that the plane would have to be truly incapable of
exceeding the speed limit, rather than just an RPM limitation. I think
there's some room for debate on that, particularly if it's not a "normal"
well defined aircraft engine.

Cheers,
Rusty