In any case in which:
the political subdivision within which the property or nonconforming use is located or the 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 political subdivisions are authorized to acquire real property for public purposes, such an air right, easement, or other estate or interest in the property or nonconforming use in question as may be necessary to effectuate the purposes of this chapter.