Oh sorry about that. I also have other version of B787-9 which is used as large plane, and I am sure I set this one to medium (for people who request it) when I made it. But I'll check it again.

no,i means ,in the game, your plane of Boeing 787-9 is stop into the large stand,not into the medium stand.i have tested.

This is the commissioned work, and the people who request it ask me to make it as medium plane.So get your word back.

Boeing 787-9 is not medium passenger plane, it is large passenger plane
your content is mistake

I will say currently just ignore that airline menu and use service vehicle selector mod to make sure you only see specific airlines you want for now if you don't want the vanilla DLC airlines. Also you can use Advanced Vehicle options mod to entirely ban the spawn of the vanilla aircraft if you want.

oof, that's kinda sad lmao, cause I'd love to use american airlines, or UA, or delta, or other IRL airlines instead of the ones we can use atm :D

The way I use it is still using service vehicle selector 2 mod to directly assign which aircraft will shows up at what stand. I haven't used the airline menu from DLC at all.

I didn't test if this will show up in DLC menu for changing airline company. I do know that the default DLC aircraft vehicle assign multiple textures on a single model and using some "emergency condition flag" to rotate between different airlines livery. But will the airport building read custom asset and allows you to have workshop livery into the selection menu ? I don't know. But I have a feeling that the answer is no. It might be possible that some modder create a mod to overwrite the DLC airport mechanism so that it can try to read additional livery file in the menu, but I think currently you just can't do that.

so with this pack, I gotta ask, could this be done for any airline to make packs like this, and does this actually allow one to make this airline the one that shows up in the airports via the DLC menu? (instead of being stuck with the vanilla options)