ORIGINAL: carlbecker
I am not sure you get useful redundency with two servos. If one fails anywhere but trimed neutral I would thing it would be a handful. I would guess flapping in the breeze would not be uncontrolable though.
Indeed, I imagine it would be quite a handful even if the failed surface was trimmed neutral. That's why I said it MAY save the plane. Still, I'd rather have SOME control than none at all. Even if the crash means a total loss, having some control might allow the pilot to direct the crash away from spectators. That's always a good thing in my book.