One way to positively determine whether this is a model or a full-size is to listen to the sound of the engine, but your video has replaced the sound of the engine with music.
How about re-doing it so we can hear the engine?
Was this pilot a part of the airshow? What was his name? Did you see him land? Did you see the pilot exit the cockpit?
I checked the web site for the 2010 Chico airshow and there wasn't a Yak-55 or Sukhoi-26/Sukhoi 30 listed as a performer.
I also checked their photo gallery. (See: 2010 Chico Airshow Photo Gallery)
You'd think that they would want to get photos of such an amazing feat of flying and yet, there is not a single photo.
A search of Google for any airplanes hovering at the Chico airshow turns up nothing.
Were you the only spectator in attendance when you shot the footage?
In short, I am not wrong. This was a model airplane.
If you still on insisting that this is a full-size, then post the raw, unedited video with the sound of the engine.
That will tell us once and for all whether this is a 40% model or a full-size airplane.
You're not telling the truth. Any of us involved in R/C can see that in about 1/8 second.
Brother OneVike,
Stop the charade. It’s clearly an R/C aircraft. You should be ashamed of yourself.