I have a guaranteed plane-saving method that can be implemented on any gas or nitro plane, for free, in less than a minute. Just remove your glow plug or spark plug from your engine and throw it away. If the plane stays on the ground, it will never crash.

Sounds like an interesting idea, but automatic deployment would be problematic, and relying on the pilot to hit a switch in time to save the plane probably won't work in most cases. Things go wrong pretty fast when you dumb-thumb a plane into the ground, and equipment failure may eliminate the RC control link between the plane and the pilot. In the case of engine failure, dead sticks can typically be glided back to the ground safely without a parachute. Airframe failure seems to be the most likely candidate for a save with this type of system (loss of wing, stabilizer or control surface). Out of about 10 or so crashes I've had, only one was an airframe failure in the air (all the airframes failed after they hit the ground ).

Post pics/videos of whatever you come up with!