FlightGear and additional aircraft can be downloaded from the following mirrors:

• https://ftp.dimensiondata.com/pub/games/flightgear/ftp/
• https://ftp.snt.utwente.nl/pub/software/flightgear/ftp/
• https://mirror.yandex.ru/mirrors/ftp.flightgear.org/flightgear/
• https://mirrors.ibiblio.org/flightgear/ftp/
• https://mirrors.tuna.tsinghua.edu.cn/flightgear/ftp/