Reading about the A330 pitot icing comments that have been made, is it being suggested that the problem is caused by setting probe heat to 'auto' and the ice detection then not being sensitive enough to prevent rapid icing when conditions make that likely?
I got an impression from one post that even with probe heat set to 'on' rapid icing could happen, which clearly would raise questions about the certification tests done on this system.
It seems that there is some concern about the A330 in this regard, is it justified?