Hello guys,
I think it would be nice, especially for us german people, if the airportnames would have the correct vowels (ä,ö,ü)
For example: EDAZ - Schönhagen and not Schonhagen, or EDVI - Höxter-Holzminden not Hoxter-Holzminden, or a big field EDDL - Düsseldorf and not Dusseldorf 
Surprisingly the corresponding citys are named correctly.
Just a small improvement, which would make a very good programm even better.