Speaking of noises from the 320, I have another one (I am not a pilot, so please bear with me). I was on an AF 320 the other day, and all during the taxiing (to the runway, and after landing), there was a loud noise coming from the plane that sounds as if something is trying to engage, but it fails. It was as if the plane had hiccups. The sound did not stop at all until the plane took off (or when engines where shut down when it arrived at the gate). It was annoying as hell. Any idea what that might be?
Many thanks.