| ostiv.org | |
| 网站标题： | International Scientific and Technical Soaring Organisation - OSTIV |
| 网站简介： | OSTIV, is a non-profit organization, affiliated with the Federation Aéronautique Internationale (FAI), as their scientifical arm for gliding. |
| 关键字： | gliding soaring sailplanes airworthiness meteorology training pilots |
1/1 [1]