Originally Posted by
ryan1234
He described it as a near-instantaneous snap roll to the inverted position.
I have no idea in a real plane. However, I can attest to this being entirely accurate for my buddies RC twin. I flew it and had an engine fail and left it failed to do some goofing around. Doing a stall with it with power full and it snapped right onto its back. Was pretty sweet. Of course I also flat spun it but they have a little better power to weight ratio than our passenger aircraft.