we've updated the DR400 aircraft workshop:
Aircraft Workshop DR400
This Aircraft Workshop includes the DR400 airplane with all source files.
as well as the SDK tools, which you'll need as well:
The wiki tutorial https://www.aerofly.com/dokuwi…php/sdk:aircraft:tutorial describes how to download and install the aircraft SDK and how to convert the DR400 aircraft. After completing just a few steps you have an additional aircraft in Aerofly, for free.
If you have any issues, you can report them in this thread.
Have fun, Jan