Billy:

Twinman has the idea, but not the actuality. The FMA Co-Pilot does not cut out with control input, when you fly weith it active you fly as you do normally, it tends to damp your inputs a little, but it remains active unless you switch it out.

And it operates only the ailerons and the elevator, it maintains level flight, but has no yaw (Rudder) control at all.

A conventional gyro will slow the yaw of the plane when one engine quits, and the FMA unit will try to keep it level.

Twinman's favorite is two gyros, the one on the rudder and a second on the ailerons. Using the FMA rig would make the aileron gyro redundant.

Twinman says "Hobbico," I have two gyros, both "Heli-Max." They work very well for me. Had a third, it left with one of the very few airplanes I've sold in recent years.

Maybe Twinman will come in with some more clarification.

Bill.