| 1. | Ifr - instrument flight rules
仪表飞行规则 |
| 2. | Vfr - visual fligft rules
目视飞行规则 |
| 3. | Vfr visual flight rule
目视飞行规则 |
| 4. | Visual - flight rule
目视飞行规则 |
| 5. | A civil aircraft performing instrument flight shall observe instrument flight rules
进行仪表飞行的民用航空器，应当遵守仪表飞行规则。 |
| 6. | The flight was conducted under special visual flight rules , which require the pilot to remain clear of cloud and in visual contact with the surface
该次飞行是按照特殊目视飞行规则进行；根据该规则，飞行员须一直离开云层并能目视地面。 |
| 7. | A civil aircraft performing visual flight shall observe visual flight rules and keep a safe separation from other aircraft and ground obstacles
进行目视飞行的民用航空器，应当遵守目视飞行规则，并与其他航空器、地面障碍物体保持安全距离。 |
| 8. | Before the implementation of ifr routes and procedures , helicopter services between hong kong and macau were operated only when weather conditions satisfied the visual flight rules . flights were sometimes delayed or even cancelled due to inclement weather
在仪表飞行规则路线及程序获准采用前，来往港澳之间的直升机只可在天气容许目视飞行的情况下运作，直升机服务偶会因天气恶劣而延迟或取消。 |
