The engines drive six-bladed reversible-pitch composite propellers, type R408, supplied by Dowty. The propeller blades are fitted with an electrical de-icing system.
The wings, tail plane and fin leading edges are fitted with de-icing systems.
Already ABCNNBBCBS are putting out the story that flight 3407 crashed because of ice buildup on the wings leading to a stall on approach. But the aircraft had de-icing systems, electric heaters in the propeller blades and engine heat is ducted to the wings and control surfaces.
This rush to sell ice as the cause is troublesome.