Welcome to the "509"

Hello and welcome to the EAA chapter 509 web page. Also known as Tri-County Sport Aviation, we serve Eau Claire, Dunn and Chippewa counties (and perhaps a bit more) in West-Central Wisconsin. We are a local chapter of the Experimental Aircraft Association. Feel free to log in or create a new account if you would like to use some of the interactive features of this website, like polls, forums and comments.

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