Gemäss einer Mailanfrage scheint eine Lösung mit den Flugplänen möglich, zusammen mit rfinder.asalink.net/free.
Hier die Antwort:
"Our company is evaluating how to proceed with the RouteFinder database, however I can anticipate that probably we will remain aligned with navdata.at. This probably agrees with your request... as far as I understand, there will be no more DAFIF releases, so this cycle (0509) or the next (0510 if it will be published) is going to be frozen until a solution for the FS Community will be found.
I'm also evaluating some possibilities to get database updates in future, and I am in contact with Richard Stefan (Navdata.at) about this matter. In principle we agree to remain aligned (syncronized) with data updates (or... lack of updates

) for all that regards Flight Simulation.
Thanks for your feedback!
Davide Giacopello
RouteFinder team"
Beste Grüsse
Marcel