navjotgill45 wrote:Apologies if asked before, thread too longto check. I'm still confused as to why MCAS would even operate in an AoA disagree situation. Surely the certifiers would have considered a "faulty airpseed/AoA etc" situation? Would love to be enlightened on this by knowledgeble posters (pilots/mechanics etc.)?
The trick is knowing that the airspeed and/or AoA is faulty. This is notoriously hard for a system to know. If a system "believes" the sensor data to be correct, it will act accordingly.
The only way to mitigate the issue is with multiple redundant sensors, and even then unreliable airspeed situations are something aircrew need to be keenly aware of.