Okla. Stat. tit. 3, § 3-113: Acquisition of air rights

In any case in which:

(1) It is desired to remove, lower, or otherwise terminate a

nonconforming structure or use; or (2) the approach protection

necessary cannot, because of constitutional limitations, be provided

by airport zoning regulations under this act; or (3) it appears

advisable that the necessary approach protection be provided by

acquisition of property rights rather than by airport zoning

regulations, the political subdivision within which the property or

nonconforming use is located or the agency or political subdivision

owning the airport or served by it may acquire, by purchase, grant,

or condemnation in the manner provided by the law under which the

agency or political subdivisions are authorized to acquire real

property for public purposes, such air right, aviation easement, or

other estate or interest in the property of nonconforming structure

or use in question as may be necessary to effectuate the purpose of

this act.