Here is something i found years ago for guys with radios not able to go to preset servo posistions when signal problems arise. i used it on throttles , to go to idle on my prop planes only....good on any r/c vehicle for saftey tho...[ i,m not saying this can be used on turbine engine shut down..but it might..i have not and wont try it since i use a 10x radio on my turbine bird].. if you can afford a turbine you need a good fail-safe radio.. but this gizmo is good for prop-jet planes,dfs,etc.,and older or less expensive radios without fail-safe capability built in from factory...........http://h1071118.hobbyshopnow.com/pro...p?prod=DYN2550