 |
| |||
| 90分钟规定 (双发客机适航证要求， 在越洋飞行时其航区内到达应急备降场的时间不准超过90分钟) | |||
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips