Thanks. I appreciate the help.

If it is an add-on issue, could I start with the most recent add ones and delete backwards? Would that uncover the problem? I wouldn’t want to waste my time if that would not work. But I would also like to avoid the nuclear option if possible.

Yes

Here is a closer image of KVPS rwy 30. For my sim, rwy 30 is showing 309. For rwy 12 at KVPS it is showing 131 (previous post).

KVPS rwy 12. And KLGA rwy 31 below. At KVPS the heading is higher than rwy heading and less at KLGA. Usually is less.

I do use fsAerodata, and I updated it to rev1 following the post. Still did not solve the issue. Aircraft heading at KLGA is still showing 295 verses actual 314. Same problem at all other airports. Aircraft heading is up to 40 degrees less than actual.

This is not about an LDA approach and its alignment with the runway. It is about the heading indicator in the aircraft and its alignment with a runway. On Rwy 31 at KLGA the aircraft shows 295 while the actual runway heading is 314. I have the same issue at other airports where the heading indicator...

I have heading variations of 15 and even 30 degrees (from aircraft to runway). I have updated to v4.4. I have disabled the recent scenery files I had loaded but the issue continues. Gyro drift is not enabled. I have uninstalled and re-installed ORBX Global, Libraries and Trees and still no change. I...