[Jimi-Jam]

Thats not possible as far as I know, but:

how about simply not flying them!?

I don't want them to be on the aircraft list, that's it. I came back recently again to IL-2 since 2 years and I don't know when I am on the IL-2 with mods which are the "true" Oleg original aircraft and which are the ones with copied cockpits. I was asking because maybe writting the "-" on the beginning of some folder names or editing some file it can be fixed for me. If it's true the deactivating cannot be done, as a suggestion I think it would be great that the new aircrafts without cockpits created for them are marked somehow, for example with an asterisk before its name on the aircraft list.

Thanks in advance