Hi,I started to have a problem with the stock GPS in the FSX planes: Let's say I position my plane on runway 29. Now, the heading indicator shows something close to 290, as expected, but the GPS heading is way off (359

GPS doesn't really know about heading. It computes positions. So to derive heading information you have to start moving then heading can be derived (with some error). So to display heading for aircraft which is not moving is meaningless. I bet this is a bug in the simulation of this GPS receiver - a real GPS would probably show you blank field instead of 359.

The problem remains when I am moving the aircraft. And I think the stock FSX GPS showed the heading right from the start.What happens is if I want to follow the autopilot course, the direction I am going is way off. The Gyro is showing the right heading, external map programs show the right heading, rpxFlights Garmin shows the right heading, it's just the default GPS (SHIFT+3 in the Cessna, for example) that is totally wrong.

Have you tried turning the monitor around about 70 deg clockwise? :(

No, but I am trying to move my house ;-)Someone got a serious solution to this problem? How do you "calibrate" the standard GPS in FSX?

Ok, just forget it. I am an idiot and now officially so :-)

darem,Runway headings are in degrees MAGNETIC (includes magnetic variation) so I can use the compass to navigate.The GPS also shows your track in degrees MAGNETIC.... that little "M" behind the heading indicates that it is a magnetic heading.This can be off an amount you mentioned from a TRUE heading. BUT the GPS and the runway label should be pretty close. UNLESS you are at an addon airport where the author did not enter the correct mag var value; then perhaps there could be a discrepancy. Is this something that you observe at all stock airports recently? Give me a apt and runway and I'll be happy to compare what mine says.Even with gyro drift enabled it should re-sync using the "D" key...Loyd

This can be off an amount you mentioned from a TRUE heading.

I don't think so. Nowhere on this planet in normal locations (excluding vicinity of the magnetic pole) magnetic variation would be close to 70 deg.