Help!! I have just recently encounterd a snag in FS2002, at a random point in flight all directional headings change. For example taking of from the channel islands and flying to Plymouth England all runway headings change. Runway 31 at plymouth England has an approach heading of 309 degrees, this will change to approx 345 degrees.All runway headings for the airport I hav just left will also have changed. In the aircraft I am flying the compass card will also jump.This has appeared to get worse as untill recently this problem only appeared to affect North America. On looking at the map view and clicking on an airport the map view also shows incorrec headings.The problem does not happen after selecting a new flight, when the aircraft is no the ground but only in flight.Have heard that AF2.BGL files can cause weired things to happen in FS2002 and only found 2 of these on my system, have removed them with no improvment. My FS file runs at approx 45GB at the moment so I am lothed to do a full reinstall unless realy nessasary.I am not exactly a FS novice but I am now stumped as to what could be causing this problem.Any help will be greatfully received. Gosser

Gosser,I had the same problem once, and it turned out to be a new scenery I had installed. I think I was trying to install a FS2004 scenery in FS2002 (they work sometimes), and it threw all my compass readings way out of whack. If I filed a flight plan, it would still take me to my destination, but the headings I was seeing offended my sensibilities. I deleted the scenery I had recently installed and everything went back to normal.Hope the fix is as simple for you.Cheers,Bob

I had this problem, both with a 120-degree and 180-degree rotation. I was seeing it mostly in Southern California, USA. Last week I set out to systematically find it, by deleting sceneries until it went away.For me, the problem went away when I got rid of all my Oil Platform sceneries. (I've put them all into one folder to keep my scenery area count down.) That folder contains several sceneries from different authors, and I haven't gone through to find the one that causes the problem.I am running FS2002, and at least some of the sceneries I'm using are for FS2004. Most work just fine. I think I've got a mixture in that Oil Platform folder, though, which may be a problem in itself.A while back, I made the problem go away by cutting back my scenery count (in scenery.cfg) when the "area" number got over 315. That caused other problems, too.

I've been encountering the same problem with FS2002 Pro. At first, thought it was my PIC767, then after a test flight in my Meridian, same thing. The fix for me (after searching and reading forum messages) was to delete some addon scenery. One the of scenery folders did have the AFCAD2 files. I deleted the scenery from my library and my hard drive. All is well and back to normal now. I'm going upgrade to FS9 soon. Would have done it sooner but the PIC767 has held me back and I don't want to stuff my computer with both versions of Flightsim.Lawrie

Thanks for the usefull info, I think that I have traced the problem to Mega Scenery's Calafornian scenery.I de-selected all my addon scenery and all functions returned to normal. I then re-selected all the scenery aeras a dozen at a time untill the problem returned. Note I also have Mega Scenery's New York scenery installed but this does not seem to cause a problem.I de-installed the Calafornian scenery and did a re-install but when the software asks if I want to install in FS2002 of FS9, and I select the FS2002 option the installer program starts searching for FS9 and then after about 15 mins reports that it carn't find FS9 even though I dont have FS9 installed at presant.I have removed all referances (so I think) to FS9 but every time I try to update in FS2002 it trys to find FS9.Any ideas????Gosser

Note: FS2004 AFCAD type files do NOT have to be labelled as AF2_XXXX.BGL. Any FS2004 Addon Scenery can contain the necessary coding to cause the problems you have experienced.W. Sieffert