Originally Posted by
DaveReidUK
Except that the author of the quoted post took pains to stress that both airspeed and groundspeed values are affected by unreliable AoA, in fact GS was mentioned twice in that context:
I look forward to learning how so.
Quite honestly, i would have loved to do so as well. Back then neither the safety department, nor the technical pilot, nor the internal investigation (it never went to outside investigation) nor the boeing technical pilots that had a look themselves could explain it coherently to me. Since then i have moved to another type and the company in question has vanished, after they got rid of their boeing fleet to begin with. So i don't see that it will be ever really explained, but it happened to quite a few of our planes after a boeing advised AoA retrofit with a different type that was then prone to freeze in a position.