MAX’s Return Delayed by FAA Reevaluation of 737 Safety Procedures

[DaveReidUK]

Originally Posted by billybone

https://www.isasi.org/Documents/libr...ducing-787.pdf

Seems that on 787 and maybe 777 Boeing decided to make use of Inertial system and GPS as a non external sensor comparison

Go to pages 35 to 43 for what they do. Probably too expensive to do for MAX ...

The 787 generates a synthetic airspeed value by combining inertial data and AoA, to substitute for UAS.

Whether you can do it the other way round, i.e. generate a synthetic AoA from IRS and IAS, isn't immediately obvious.