I'm a newbie to the sport and one thing I learned was to do a preflight every time you go out....even after just refueling. After my first flight one day, we couldn't fly right away. My instructor showed me how to center the wings. When it was time to fly again, I fueled up, ran it out to the runway and the instructor went to take off. The plane got in the air then proceeded to make a rapid turn right into the ground. Totaled the plane. Since we flew once before that day we didn't do a preflight and I had forgotten to hook the ailerons back up. Now I do a preflight before every flight!