Originally Posted by
infrequentflyer789
That is my understanding too, I am just starting to think that I have reached that understanding by just assuming MCAS works the way the rest of the 737 FCC stuff does and not from actual released information.
MCAS clearly used same AOA source on consecutive LionAir flights, the reason for that has not yet been confirmed.
If one segment used AoA1/FCC1, the arcraft landed, power to the FCC was cycled, then upon power up the AoA1/FCC1 would be active, as this FCC is always the active one after a power cycling regarding computing MCAS.
So one sees that there is a 50 percent chance that two consecutive flights will use the same FCC/AoA if the power to the FCC was cycled when on the ground.