Originally Posted by
MarcK
Stuck bits are more likely an optical encoder error in the AOA vane, not a software error.
An absolute encoder is usually encoded with gray code or something similar, and I would expect a SIL3 encoder to have two encoders on the same shaft to make it fault silent.
Is IEC61508 SIL used in aircraft ?
https://www.tr-electronic.com/products/sil.html