[doxydexydroxide]

And this is why the 757 systems failed far too often, because taking N-Modular Redundancy to this level causes a great deal of false positives.

For this reason it was rejected for use on the 777 by the FAA Chief Scientific and Technical Advisor for Flight Controls.

With regard to the 777 Flight Control System Design, "Bob Yeh" released a number of documents on the system.

http://www.citemaster.net/get/1472830e-8785-11e3-9b63-00163e...

[WalterBright]

I didn't know this. It makes sense, and the reference indicates they did some solid statistical work on the experiences with those methods.