The API for AircraftRealism has changed to work with the new Factorio 2.0. Mainly, AircraftRealism no longer modifies the plane, you only tell it the grounded/airborne plane prototypes. You have the flexibility to change all the prototype values yourself.

Shadows are done differently now that should (hopefully) be easier for you. You create the sprites, and pass an array of sprite names to the API.

The current AircraftRealism 2.0.0 release is incomplete, I will add back the rest of the features (runway, collisions) in a newer version
Let me know if you need any help.

https://github.com/jaihysc/Factorio-AircraftRealism/blob/2.0.0/Docs/AddingNewPlanes.md

Excellent, and thanks for the heads up!

Heya, I gave it an honest attempt but trying to update for 2.0 has my head spinning, the documentation is plenty good for those who know a thing or two about factorio modding but its been two years and my head was spinning trying to figure out what to do, i check other mods to see how they did it, and while I could sort of see how it was done, I couldn't find any patterns that stood out to me. If your willing to still help im all ears! but until then the mod is firmly stuck as it is.