Yes, it is. Even without GPS the FMC position is updated with scanning DME stations, so the ANP is usually in the vicinity of 0.2NM or better. RNAV in the terminal area is requiring 1NM or better.
Jan
looks like no one find a solution. I also asked in x-plane forums and they are also doesn't know how to fix that.
Today I waited to x-aviation and ask them for refund. IXEG made an amazing work on that bird. I really liked that
but I can't use that without full resolution.
thank you