despite the fact that I AM SWITCHING ON THE ANTIICE , I am loosing airspeed indication when I fly in icing condition with the A330 Poskydoes anybody knows how to cure this?patrick

Try turning on both the pilot heat Shift+H if there's no switch and the deicing. See if that does it.

You need to turn on Pitot Heat to prevent the Pitot Tube from icing up. Once that happens, ram air is no longer provided to the airspeed indicator and it will therefore malfunction. Anti-ice does not do anything prevent Pitot Tube icing.If there is no Pitot Heat switch on the panel, use shift+H. Paul

I am using the deffaut FS9 777 panel : there is one switch for anti icing but no switch for pitot heat so I have to hit shift +H in addition to the anti ice knob. is that right?patrick

YesPaul