What is the Boeing 737 Max Manoeuvring Characteristics Augmentation System?

Re:What is the Boeing 737 Max Manoeuvring Characteristics Au... by js2 on Tuesday March 12, 2019 @02:10AM (#19365802)

I edited my comment and removed the airspeed reference but what I meant it that MCAS is only supposed to activate at airspeeds approaching stall and high AoA (and some other things). In the Lion case the plane had a pair of AoA sensors in disagreement and the airspeed shouldn’t be near stall in level flight, should it? Yet the MCAS commands nose down anyway.

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Re:What is the Boeing 737 Max Manoeuvring Characteristics Au... by chipsa on Wednesday March 13, 2019 @08:10AM (#19377834)

Define "airspeeds approaching stall". You can stall a wing at any airspeed, if the angle of attack is great enough. And being able to tell if your angle of attack is great enough is the point of the AoA sensors.

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Re:What is the Boeing 737 Max Manoeuvring Characteristics Au... by baybal2 on Tuesday March 12, 2019 @04:03AM (#19366197)

AoE sensors may well be in disagreement even without malfunction: local turbulence, flying in somebody's wake, etc

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Re:What is the Boeing 737 Max Manoeuvring Characteristics Au... by neuronic on Tuesday March 12, 2019 @05:38AM (#19366556)

AoA sensors might disagree to a point, but 20 degrees difference is ... unusual.

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