This is really interesting. I had a Jet Legend T-45 that I lost on flight number two. It was flying level at a good speed and medium-high power setting when it just rolled over on its back and when in. It was *not* a tip stall and I figured it was either an aileron or elevator servo failure. I had the modified stab control mechanism from GJC with one servo per stab. My main thought on cause was a stab servo failure - I was thinking that heat might have played a role, but I was very careful to insulate the stab servos as others had done and shown here on RCU.

Now I'm thinking that its likely that I had a failure on one of the stabs that caused the death roll... Oh well, not much I can do now, but its good to know that there may have been a cause that I couldn't control (I had no idea this was a problem with these jets way back then...).

Bob