re peter h
Boeing took a different approach with 777/787, inventing C*U and providing a completely artificial feel on conventional controls, which I think allows them to meet the normal control force / stability reqs of part 25 without special conditions.
Boeing 787 did include an Inertial nav system ' compare or monitor ' re SYNTHETIC airspeed and other factors independent of any external sensors
Introducing the 787 - Effect on Major Investigations - And Interesting Tidbits
Air Safety Investigation ISASI september 2011 by tom dodt Chief Engineer
About midway thru the document... Which can be downloaded as a pdf