Contributing to airlines
All changes are preferred to be made via GNG: https://gng.aero-nav.com/AERONAV/icao_request_fhairlines
So that your changes will be visible in Euroscope and other programs.
If you want, you can also correct data in our repository: https://github.com/VATSIM-Radar/data/blob/main/custom-data/airlines.json
Data from here applies within 7 days since released.