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To: FtrPilot
All Boeing 737 aircraft have 2 AOA sensors. The issue is the MCAS architecture where MCAS only receives data from one AOA sensor at a time. If that sensor malfunctions, MCAS has no way to determine that the sensor has malfunctioned and reacts to the AOA data being provided by the sensor.

Thanks for the info.

Still, what is the point if they are both not hooked up?- Tom

46 posted on 05/27/2019 9:57:12 AM PDT by Capt. Tom
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To: Capt. Tom
...what is the point if they are both not hooked up?

Exactly!

Once the proposed fix is implemented, MCAS will use data from both AOA sensors. If the sensors disagree (outside a certain tolerance) MCAS will be disabled. Also, the "optional" safety features will become "standard".

50 posted on 05/27/2019 10:46:56 AM PDT by FtrPilot
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