Why does an aircraft have TWO independent ENG INTI-ICE systems?
Just to stir the pot, the aircraft I flew before the present ride HAD two wing anti-ice switches. Yes, there was a duct connecting the two sides and a note that if either tapped engine or it's valves failed, the remaining engine could anti-ice both wings as long as it was spooled above 70%.
Engine anti-ice is dedicated to the engine. IE. L.Eng bleed supplies Left Engine anti-ice. Also, the engine anti-ice bleed is independent of the main bleed supply. Separate bleed tap from compressor. Separate bleed valve. Separate switch etc.
