The RTF Cubs, like the ParkZone, are very touchy when it comes to wind. They are very light for their wing size which is what makes them so good at flying slowly, and so poor at battling the wind. When you find your plane flying into the wind, keep the nose of the plane down. If you let the plane get level, the wind will pick up the wings like a kite and the plane will stall, droping to one side or the other. You need to go to the high pitch prop and get a stronger motor if you want to fly in windy situations.

Sometimes it will be almost calm at ground level and more than 10mph above tree top. At those times it is best to land the plane as soon as possible and come back on a calmer day. When you have such a differential, the wind frequently gusts, which can cause all kinds of problems for flying.