I've had a look around the site, alot of it is payware add-ons, although I have downloaded the ground staff (marshalar) and installed it, I'll check it out shortly, you can find it here............
http://www.cam.hi-ho.ne.jp/urakawa-t/index2.htm
Most pages I've come accross will let you click the English version.........
http://www.cam.hi-ho.ne.jp/urakawa-t/contents5.files/contents5e.htm
http://www.overland.co.jp/english/index.html
Some of the aircraft you can download and install, so I take it they are free, here's the TU 737NG package..........
Just to add, it appears that the TU 737NG and the TU 767-400 are flyable AI aircraft
As for the scenery and ground vehicles, I'm discovering that they are payware, and found here...........
http://secure.simmarket.com/default.php?manufacturers_id=170
Maybe someone else can discover other things from the site. 😉 🙄
Just to add, the TU 737NG and the TU 767-400 are flyable AI aircraft 🙄