airspace

airspace. The space that extends upward from the surface of land, esp. so far as is necessary for the owner or possessor to have reasonable use and enjoyment of the incidents of its ownership or possession. Cf. OUTER SPACE.

national airspace. Int’l law. The pillar of air above a nation’s territory — including internal waters and the territorial sea — over which it has complete and exclusive sovereignty and through which foreign aircraft have no right of innocent passage. • There is no agreement on the boundary between national airspace and outer space.

navigable airspace. The area above the legally established minimum flight altitudes, including the area needed to ensure safe takeoffs and landings of aircraft. 49 USCA § 40102(a)(30). [Cases: Aviation 3, 231. C.J.S. Aeronautics and Aerospace §§ 7–9, 21, 73.]

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