When you now compare these values with our source, you see exactly the same information:

But the true heading in the AIP is wrong because when you calculate 07 - 25, you will find out that the true heading is NOT 80.45 but 80.41726318 and we use the exact true heading. That is the reason for the slightly shift, I assume. When you use also the runway-coordinates above + the real-true heading you will see, that the runway matches exactly.

We can try to adapt this but I´m not 100% sure, if this is the real solution - possible in your case but we must look on all other cases too.

According to the given published coordinates
N42 10 29.85 E042 28 04.04 for runway 07 threshold
N42 10 43.27 E042 29 51.43 for runway 25 threshold
the runway true course, using the WGS84 ellipsoid earth model is indeed 80.45
It is 80.42 using the spherical great circle model
I’m pretty sure the simulator use the WGS84 model since probably FSX
Hope it will help

Hi,
I have released revision 4 now, where I have changed the earth model calculation to WGS-84 …

The true-heading at UGKO is now exactly 80.45191. More precision is not possible in MSFS. We have changed the complete logic now behind to fully support WGS-84. There are a few “open tasks” which must be changed but the main task is finished.

Please try revision 4 now … it should be ok, I hope.