There are a few of these "Fail Safe" units that are purposely made for cars. The problem is that most of them state not for use in airplanes. I checked the site and it did not mention anything, but cars and boats.

example: Futaba FS-1 Fail Safe Unit - This is a Fail Safe Unit for Use with CARS and BOATS with Futaba "J" Radio
Systems. NOT FOR USE WITH AIRCRAFT OR HELICOPTER RADIOS!

I'd get a good TX/RX combination that is capable of fail safe for any turbine jet. I would not trust one that does not specifically mention for aircraft use.

Just my .02 cents

JR Gautreaux