[ton414]

When you HSFX v4.1 installed, you can install also:
HSFX v4.11:
http://www.242sqn.com/phpBB2/viewtopic.php?t=2097
HSFX v4.11 Hotfix:
http://www.242sqn.com/phpBB2/viewtopic.php?t=2109

To install new aircraft, in my case I created the folder MODS:
C: \ Program Files \ Ubisoft \ IL-2 Sturmovik 1946 HSFX \ MODS
And in that folder and install the new aircraft and cockpit, as directed by the creators