@Bertus
Hi Albertus,
That is a good explanation. I’m sure it will help other users too.
BR
Heri
Not sure of the application with the the FC you all use, but I fly for a company that employs very large custom built Hex’s, and fwiw when doing LVMC we were instructed by the Dev team to only use true compas heading vs magnetic due to the variance that you elluded to.