Comment by jpollock

For example....

"Preliminary A330/A340 FCPC algorithm"

"The algorithm did not effectively manage a specific situation where AOA 2 and AOA 3 on one side of the aircraft were temporarily incorrect and AOA 1 on the other side of the aircraft was correct, resulting in ADR 1 being rejected."

So, you've got a system where _two_ of the three sensors are bad, and you need to deal with it.