Ailerons 

Ailerons are small, hinged sections located on the tip of both wings. They create rolling motion of the pane. The pilot controls them by raising one and lowering the other aileron with a control wheel. You can roll the aircraft to the right by lifting the right aileron and dropping the left aileron by turning the wheel right. Rolling left is done moving the ailerons the opposite way. Keep in mind the ailerons aren't the only thing that helps make the plane turn.