Originally Posted by
gums
Salute FC !
My response has been "mod'ed" out, but I repeat part for brevity and more later.
I KNOW!!! I have seen many references that A/P is disconnected upon various air data problems, so my scenario begins with the same sensor data that could trigger McAS - primarily bad AoA and its children/associated data entities. In other words, excessive AoA dat or maybe failed data to the ADRIU and FCC. And BTW? How does the MCAS sfwe module handle loss of AoA data and mach data?
Gums sends...
MCAS checks AOA validity. If it is declared invalid via in-line monitors (such as an error with the heater circuit or detected problem with wiring) MCAS from that FCC is shut down. I think it switches to the other FCC in that event. Will check.