I have a DX7 and its not hard to shut motor down. Just set up throttle to shut off when throttle trim is in the lowest setting. The DX7 will shut off the airplane motor when the range is too far also. Push the button in the back (with plane on ground) and walk away when you reach a distance too far for the radio it will shut the motor down. you can also put the fuel feed line out the side of the plane so you can pinch it off to shut the motor down manually.