Wright Flyer Game Easter Eggs feature

There are 3 easter eggs in this game. Although this is about the Wright Flyer, there are 4 built in planes, 3 you have to do the right thing to get to them. (No you won't figure out by watching the preveiw) There are actually 2 ways to do each thing, although you might not find both unless there is something certain. If you find out, you can post it, but right now I want you to figure it out!