EN:
Since this is a PaintJob, you need the original model from "SkylineGTRFreak & Tails330"
Link: https://www.gta5-mods.com/vehicles/airbus-a350-900xwb

Installation:
Follow the ReadMe from the original model, once you have the original model installed, grab my .ytd and just drag and drop it into OpenIV.
Don't forget to turn on edit mode :-)

Finished and ready for take off ;-)

Update 30.09.2024: New Screenshots