I did download the DR400 file without problem.
However, there is a problem to install it.
I decompressed and copied the file and pasted it in:
C: \ Users \ (Users)GeF \ Documents \ Aerofly FS 2 \ addons \ aircraft \ dr400
and also in:
C: \ Users \ (Users)GeF \ Documents \ Aerofly FS 2 \ aircraft \ dr400.
However, at startup, I do not see the DR400 in the choice of aircraft!
Thank you for helping me because I really want to fly this plane, it's my plane-fetish, I've done a lot of hours with it.