Well, it happened!  The first flight happened yesterday in Washington, OK with Jean D'Assonville of Sling Aircraft at the controls.  Videos at the bottom.

FAA DAR (Designated Airworthiness Representative) Joe Broker going over the paperwork before looking over the plane.  It passed!

Jean snapped this picture on the first flight!

Vergil Caskey (a 747 pilot and Sling TSi builder) getting checked out by Jean.  Vergil will do the remaining test flying.

Vergil gassing it up after he repositioned the plane to KOUN in Norman, OK.

First Flight!

Fly-by on the first flight