Originally Posted by
EDLB
Can you verify this? This would be very crude early 1970th technology and with a Haming distance of 1 only protect against single bit failures. A two bit failure would create the next valid data. And there is no guarantee that any interference will only disturb 1 bit. Equaly likely is, that a sequence of bits are disturbed.
I still wonder where the 20 degrees constant offset in the Lion Air AOA sensor came from. See preliminary report. That’s not a stuck sensor.
If the Ethiopian will show a similar offset then there is another problem burried in their flight control system.
The 20 degrees offset shown by the graphs are between "angle of attack indicated left" and "angle of attack indicated right". If "angle of attack indicated" means the AoA value that would be indicated in the AoA display (optional), the offset between AoA sensors would be 1,5 to 2 times more (according to Boeing document linked above) thus closer to 40° than 20°.