Aeronautical clearance easements (T4-T5) – height

Aeronautical clearance easements which include the prohibition on creating or the obligation to remove obstacles which may constitute a danger to air traffic or harmful to the operation of safety devices established in the interest of air navigation.
A plan of aeronautical alternate easements shall be drawn up for the following aerodromes and facilities:
(1) aerodromes intended for public air traffic or created by the State;
(2) Under conditions laid down by regulation at certain aerodromes not intended for public air traffic and created by a person other than the State and at aerodromes situated in foreign territory for which alternate zones must be established in French territory;
(3) to installations for air navigation aids, aeronautical telecommunications and meteorology installations relevant to the safety of air navigation, without prejudice to the application of the provisions of articles L. 54 to L. 64 and R. 21, R. 24 to R. 28, R. 30 to R. 38, R. 40 to R. 42 of the Post and Electronic Communications Code relating to easements established in the interest of radio transmissions and receptions;
(4) At certain locations corresponding to preferential crossing points for air navigation.

This layer represents the isolines of heights related to this servitude.

航空净空地役权（aeronautical clearance easements）包含两类要求：一是禁止搭建障碍物，二是负有移除障碍物的义务——此类障碍物可能危及航空交通，或损害为航空导航设立的安全装置的运行。
需针对以下机场及设施编制航空替代地役权方案：
(1) 用于公共航空交通，或由国家出资兴建的机场；
(2) 符合法规规定条件的、非用于公共航空交通且由非国家主体兴建的机场，以及位于境外、需在法国领土内设立替代区域的机场；
(3) 与航空导航安全相关的航空导航助航设施、航空电信设施及气象设施，但不影响《邮政与电子通信法典》中关于无线电传输与接收专用地役权的第L.54条至第L.64条、第R.21条、第R.24条至第R.28条、第R.30条至第R.38条、第R.40条至第R.42条规定的适用；
(4) 对应航空导航优先穿越点的特定区域。

本图层代表与该类地役权相关的高度等值线。