@ Mad Flt Scientist
But it is not (as of yet, anyway) retroactive, so older aircraft (which means virtually everyone) are potentially at-risk from a similar event
True, but the airworthiness authorities (FAA, EASA) had and have the power to make it retroactive if they think it necessary.
One should also remember, as
pattern is full said, that:
Let's keep in mind that in the case of AF447, the problem was not the general technology of pitot systems, but a specific model from a specific manufacturer that proved to be less-than-perfect when it came to certain icing conditions.
With that model removed from the supply chain they presumably think retroactivity to be unnecessary.