When any property is condemned or seized by competent authority in the interest of health, safety or security, the owner thereof shall not be entitled to compensation, unless he can show that such condemnation or seizure is unjustified. (n) ARTICLE 437. The owner of a parcel of land is the owner of its surface and of everything under it, and he can construct thereon any works or make any plantations and excavations which he may deem proper, without detriment to servitudes and subject to special laws and ordinances. He cannot complain of the reasonable requirements of aerial navigation. (350a)