most recevers this days have a fail safe setting. This means that if they lose contact with the transmitter, the control surfaces go to nurtrual and the throttel goes to minnimum or cut of. I know that the oldtimers had a fuel shut off for the free flight airplains. Any way, to see if your radio is set up with the fail safe, set up and start your aircraft,  then while standing in front of the elevator/horizontal sabilizer, turn your transmiter off and see if the failsafe kicks in. Hope tis helps.
                         
                                                       TC