Originally Posted by thegasguru

Is the a significant design change in the "older" U116s? Seems unlikely. I can tell you that the current U116 definitively fits overhead in the CRJ200s and the ERJ145s, if you put it in wheels out.

I put my Aeronaut (or equivalent ) on top of my U116,and happy wheel all over the airport. When I'm about to board, I put the Aeronaut on like a backpack (or Tristar or whatever), and I retract the handle of the U116, and hand carry it. Never been questioned about it, not even once (which is a little dumb luck, I admit). And there is very often unused overhead bin space such that I can put both bags overhead without poaching space from another traveler, since so many other people end up checking their bags on those tiny jets.

So far I've been thrilled with my method.