Hi,
The ship was climbing 1000fpm. What does that say about the Zipper? With the turbulence ("fortes"), I still am not convinced ICE was the culprit re: speeds.
You can maybe never know .. as it's no alarm for pitot tube problems (like clogged by ice or other substance) on the A330
So it can be a real pitot tube problem or " turbulence ("fortes") "