There was a loss of control in Italy Hugmonster that was recovered at a much lower alt that was also attributed to icing.
I don't have the report infront of me currently but the exact same scenario happened there, about 2 years earlier...
Furthermore, when you accuse of protectionism, the implication is that there is a domestic similar product that is being protected. Pray tell, what 70 seat turboprop in production was the NTSB protecting?
Cheers
Wino