3DSMax v5. Total scene polycount is roughly 60k right now, although as you can see there's still a great deal of detailing left on the hull and side pylons - not to mention the entire interior still needs to be fleshed out (right now it's an empty box)
Additionally, it's referred to as "flight test" because the initial idea for the anim was to do a preflight check - test the airbrakes, vents, and other control surfaces, then retract the landing struts (not shown, due to incompleteness), and give it a brief run. Total expected animation time is somewhere around the 4-minute mark.