I noticed that callsigns are missing for some airliners like Fedex, and all South Korean airliners. ATC addresses them by Airbus 7623, Boeing 705, etc. Can that be fixed please?
I guess MSFS?
Yes
MSFS Issue. Nothing AIG can do about it.
Isn't it just missing ATC ID, ATC airline or something?
No. It's a bug in the AI/ATC in the sim that makes flightnumbers and airline callsign into registrations instead. Not for every airline, but for some airlines. And there is absolutely nothing AIG can do about it, as the only one to fix it is ASOBO. And they about it, but haven't fixed it in 2-3 sim updates.