controlled airspace

the approval of an air traffic control unit shall be obtained for a civil aircraft to conduct flight activities in a controlled airspace.

第七十四条民用航空器在管制空域内进行飞行活动，应当取得空中交通管制单位的许可。

no one can remember a time before when controlled airspace has been closed in the uk.

没有人能够记得以前英国哪次实行过领空关闭

in line with international civil aviation policy, no flights are currently permitted in uk-controlled airspace.

根据国际民航政策，英国管制空域目前不允许任何航班飞行。

the airspace sector planning is the process that the controlled airspace is divided into basic control units in accordance with the relevant state documents by airspace planning departments.

空域的扇区规划是指各个国家的空域规划部门将管制空域按照相关文件划分基本管制单位。

a controlled airspace extending upwards from a specified limit above the earth.

高于地面的指定极限以上的受管制的空域。

air tour helicopter , you are in controlled airspace

观光直升机，你正处于管制领空