[JAMF]

...\MODS\STD\com\maddox\il2\objects

so

[drive]\Program Files\Ubisoft\IL-2 Sturmovik 1946\MODS\STD\com\maddox\il2\objects


I've got IL2 on D:\GAMES\Flight\IL2_1946UI, but if you used the default location, that's what it would look like.