Inspired by the payware one for Microsoft Flight Simulator 2020.

Installation:

1: Install the Antonov AN-225 Mriya by SkylineGTRFreak:
https://www.gta5-mods.com/vehicles/antonov-an-225-mriya-largest-plane-in-the-world

2: Extract the "an225_sign_4.dds" file

3: Using OpenIV with Edit Mode enabled, add it to the "an225.ytd" file