The reason for the division of Class E and Class A airspace stems from the type of planes operating in them.

E 类和 A 类空域的划分取决于在这两类空域飞行的飞机类型。

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Caption: Congolese airline Hewa Bora Airways is one of dozens of airlines blacklisted from operating within the airspace of the European Union.

描述：刚果航空埃瓦博拉航空公司是数十家禁止在欧盟领空内经营的航空公司黑名单中的一个。

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Maintaining safe separation with other aircraft or obstacles is the responsibility of the pilot of the aircraft when aircraft are operating in this airspace.

航空器在此空域内飞行时，与其他航空器或障碍物之间的安全距离由航空器驾驶员负责。

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So, too, would one operating outside of public navigable airspace, though defining exactly where that lies for UAVs can be complex.

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