We have good news for AirNav RadarBox users.
We have just started the process of developing a central database, maintained by users, with updated aircraft information.
The RadarBox client application will always look at this database for aircraft details first and only if the details cannot be found there it will try to retrieve data from the GAS central servers.
We have just created a closed discussion board on the forum accessible only to "Database Updaters" where all the discussion regarding new aircraft information will take place.
We are now accepting volunteers for this task. Feel free to send us a PM if you are interested.