Which brings to mind is question:
Can static ports become frozen in flight? I know pitot tubes can, but static probes?
And are the chances that pitot tubes will freeze much eqrlier than static ports? i would say 99%. I deem that icing related unreliable speed situations in cruise flight will always be pitot related. So you will be able to rely on Altitude indications and FPV. Angle of attack can be derived from the difference between body angle and FPV.
Aguadalte
That scenario of the false oversped triggering undue high speed protection, when you are actually flying very slow, is dreadfull. But I believe you can still use manual pitch trim to achieve pitch down.
By way, what will happen in a Boeing in the same circumstances?
As I always say, the most difficult partof an unrliable speed scenario is becoming aware that speed is unreliable, in the first place. If you don't come to that conclusion timely, you are fu*ked.
Then, My opinion is that the procedure needs more refining. It is too "take off oriented". You can be at high level with "safe conduct of the fligh" absolutely "impacted". Then what do you do?