Lots of free planes here
http://www.avhistory.orghttp://www.groundcrewdesign.comhttp://www.italianwings.ithttp://www.isoliti4gatti.comhttp://www3.telus.net/murrdakahttp://www.koreanskies.comRegardless of a purchase or freeware this is how you add them
Open the campaign file with a text editor and find the line that has <TechTree> on it. After that, you should find a list of aircraft types. It should look like this:
<TechTree>
<Aircraft Type="BF_109G_10">
<Date Month="4" Year="1944"/>
</Aircraft>
Just add the 1% planes to it like this:
<Aircraft Type="3gb_mosquito_mkvi">
<Date Month="5" Year="1943"/>
</Aircraft>
Be sure to use the M3D ID *3gb_mosquito_mkvi* not the folder ID 3gb_mosquito_mk_6. Also they are case sensitive.
They will not add to an existing open campaign.
They will not show up if the campaign date is prior to the in-service date.
If you have a "failure to load" be sure that a specific aircraft name has not been changed & you have for every entry in the campaign a corresponding plane in the CFS3/aircraft folder.
You can leave planes out or add new ones in with an edit as long as the contents of the aircraft folder contains all the planes in the campaign.xml
Step By Step
Open main CFS3 Folder
Open the Campaign Folder
Click on "fortress europa" XML file.
Copy it to your desktop.
Rename desktop copy to "3-fortress europa"
Return "3-fortress europa" to the campaign folder
Open the file & add 1 plane for a test.
To find the planes ID:
Open the main CFS3 Folder
Open the Aircraft folder
Select a plane & open its Folder
Open the Model Folder
Use the name of the M3D File in that folder.
Caution you are only using the NAME of the file not the whole file.
In the example above 3gb_mosquito_mkvi was the M3D file name which is the one you want to use to add the plane.
The actual name on the main Mosquito aircraft folder is 3gb_mosquito_mk_6. This name will NOT add the plane to the campaign.
Exception to the rule (there always is one)...not all our planes have a "model" folder. If the plane does not have one - like the Mosquito - just search in the planes main folder for the M3D file by sliding your mouse over them to get the name to show up.