Originally Posted by
nowherespecial
If we extrapolate across from the 139: Not very well and about 200kgs (not sure if its even certified on the 189 but happy to be wrong).
Yes it is. From the TCDS:
Flight into known icing condition is permitted only when the kit Full Ice Protection System p/n 8G3000F00111 or p/n°8G3000F00311 is installed.
I'm sure the Sakhalin Energy machines have it - they were insistent. (No idea if they are still flying though with the spares embargo!)