Thank you for the reply agracier.
So the files are to be added when making missions if that is correct ?
Were do I put or load the files to so i see the parked planes ?
Right, when you make a mission, you can choose from stationary planes (or stationary ships / armor etc) and place these non-moving objects wherever you wish.
But as for loading these objects. You have to install them in the game. Usually there should be instructions included on what lines of text also have to be copied to which files. The first time you do this may be a bit daunting, but it's really nothing more than copying files to a correct location in your game files structure and also copy/pasting the correct lines of text to the correct place in the correct file.
I believe for stationary objects, you only need to copy text into the stationary.ini file which is located in:
...#DBW/STD/com/maddox/il2/objects/stationary.ini
or for the 1916 game
#DBW1916/STD/com/maddox/il2/objects/stationary.ini
For this part, it's best to read instructions carefully, make backups of all files you are going to modify first and then follow the procedure of copy/pasting.