Last aerobatic helicopter act I saw was at the 1986 Abbotsford International Airshow. Anyone else there?
So the comments in the video about “this has never been done” aren’t exactly true. Maybe in a U.S. airshow, but not in Canada or Europe.
R/C helicopters, BTW, do much more aggressive routines as you might expect.
If you want to see SICK helicopter flying, watch this video, about 45 seconds of wording at the beginning, then its nuts
http://uk.youtube.com/watch?v=KYVdEbAYkSY&feature=PlayList&p=078403A8BBFA89C5&index=35