Xyzan

I don't think you should activate AP (auto pilot) before beeing in the air. Maybe AP is trying to do the turn?

Thanks for update on the topic. Fingers crossed.

I cannot edit previous, so writing next one. I started sim, uploaded same flight (I did not create another one from simbrief) and it worked this time... Will monitor... Directs, switching to heading and back to Nav.

I just wandered... I was flying with Freighter variant. Maybe this matters? Or just (for example) first flight fails... Will try another one (the same as previous) and check.

For me, NAV did not work from the takeoff. I've never turned heading mode. After takeoff it order FD to turn right (I was following FD, and noticed early turn right, and then constant turn). And whenever I tried to switch back to NAV, it was always, constantly trying to do right turn. I've deprted EDDH, route created using simbrief, and uploaded route to FMC with uplink as well. my route: EDDH/33 N0473F270 AMLU1G AMLUH M852 POVEL Y800 DESAR DCT UPLEG UPLE3M EDDP/26L

exactly the same problem today 😞