As mentioned in other threads seems that MSFS 2020 has not the most updated or reliable value for magnetic variation.
I don’t mind much really but I need to be sure being able to set through SimConnect the proper bearing values I want.
Around england, as example, I get values of MAGVAR that are about 0.2 (documentation says it’s in degree)
The real value should be something around 2 degree.
If i simply check the expression
reading both values by the simulator I get something around 3.7
Now I have a geographical bearing and I need to communicate it to the autopilot I assume converting it to magnetic.
Which of the numbers I should use?
I’m considering making some test in norhtern canada where the value is so big you can’t possible be wrong and still not noticing it…
Anyone stumbled into this problem?