unless you consider flying it on bio fuels which was recently done with an L 29

http://www.youtube.com/watch?v=Dia6QIxORbM

 

Thanks for the A-4 footage. The Scooter restoration project is coming well and I am planning first flight in June. I will post video's and pictures here first. The complete overhaul of the flight control systems is almost complete with the gear in work. The engine is to arrive from overhaul next month and the preliminary cockpit instrument pannel has been cut. Transport canada has made a few visits.