Okla. Stat. tit. 60, § 802

For purposes of this act, airspace is defined as that space which extends from the surface of the earth upward and which is either occupied or subject to being occupied for the reasonable enjoyment and use of the land surface and any structures thereon by the surface owner or owners, his or their heirs, successors or assigns. The airspace owned by a surface owner or owners is that which lies within the vertical upward extension of his or their surface boundaries. Airspace as defined herein shall in no way be deemed to contravene, supersede, amend, modify or alter the existing powers, requirements, limitations or other provisions of statutory or common law pertaining to aviation, air transportation, air commerce, or air operations.