Hi all, I did search the forum but didn't come across such a problem, so apologies if this is already on another post.Problem description:During flight using a couple of planes (mainly the default 737-400), my IAS resets to 0. This causes obvious problems such as not knowing my current climb, cruise, approach, and landing speed.Does anyone know the cause and solution to this problem?Thanks in advance.Running FS2004 SP1, default scenery, default 737-400.

Hi,Turn on Pitot Heat with the switch or use Shift+H. When ice builds up in the pitot tubes, it blocks the operation of the airspeed indicator. After you turn it on, watch the airspeed come back up!

Thanks BoeingGuy,I will be so embarrassed if that is the reason, I should have known that! Didn't realise it was that effective within FS9.Thanks again.

>I will be so embarrassed if that is the reason, I should have>known that! Didn't realise it was that effective within FS9.>It is pretty effective in FS9. But unfortunately that's pretty much all icing does in FS9...blocking your pitot tube.Jason

Hi Jason,No it doesn't. It also adds weight to your plane. We have seen where it even causes stalls!Thanks,Jimhttp://www.hifisim.com/banners/hifi-community-sigbanner.jpghttp://www.hifisim.com/

>Hi Jason,>>No it doesn't. It also adds weight to your plane. We have seen>where it even causes stalls!>>Thanks,>Jim>That's good to know. How does it work in FS9? Could you please explain a little more?Thanks,Jason

Hi,If you fly in icing conditions for too long, the ice starts to add weight to the plane. No, you cannot see the ice, but it is there. IAS starts to drop and small planes become sluggish.Jimhttp://www.hifisim.com/banners/hifi-community-sigbanner.jpghttp://www.hifisim.com/