[skyomish]

You do have a mods folder?? Some UP has them others do not.
Did you install you plane in the MODS folder plus
add the needed line in the AIR.INI file located in the STD folder.
The AIR INI is located in the STD. folder.

STD/com/maddox/il2/objects after you click the objects folder you will see the AIR.INI file.
Also you need the up todate BUTTON file installed.

Just trying to figure out what went wrong.If you have done all this it should show.