This is one of those problems that come up in FS2002 PRO from time to time, suddenly, and for no apparent reason.
At most airports, on any continent, whenever I try to take off from the active runway, my instruments show a completely wrong heading. E.g. on the Santiago de Chile active runway nr. 17 (171 degrees), I get a reading of 212 degrees. Mumbai airport likewise: instead of 269 degrees, I get 34 degrees. I have the same problem during approach and landing. Also, the window that shows the ILS information contains the same incorrect data. Strangely enough, Meigs (Chicago), the starting point of my default flight, shows the correct heading!
I tried to fix the problem by reinstalling FS2002 PRO, but this worked only for a short time. Next, using AFCAD, I restored all the original FS2002 airports by reinstalling the relevant .BGL files from FS2002.CAB on the first CD. This didn't work at all. I must add that I have installed quite a few add-on airports, but the problem is not limited to that category.
Does anyone have a solution for me?
Pieter G. Wijtsma