Ala. Code § 4-4-10
Any municipality of this state which has established and is operating a municipal airport shall have the power and authority to condemn, or acquire by purchase or gift, the right to abate or remove any structure, building, tower, pole, wire, tree, woods or other thing, or portion thereof, located within one quarter of a mile of such airport, which the governing body of such municipality shall determine to constitute a menace to the safety of aircraft using such airport, including the right of ingress to and egress from the land upon which such structure, building, tower, pole, wire, tree, woods or other things exist, for the purpose of such abatement or removal. In addition to the foregoing power and authority, any such municipality shall also have the power and authority to condemn or acquire by purchase or gift the right to the unobstructed use of such portion of the airspace above lands within one quarter of a mile of such airport as the governing body of such municipality may determine to be necessary for the safe landing and taking-off of aircraft utilizing such airport. Such municipality shall have the further power and authority to acquire by purchase or gift or to condemn, for a term of years or perpetually the right to place and maintain obstruction markers or lights upon any structure, building, tower, pole, wire, tree, woods or other thing located within one quarter of a mile of such airport, which the governing body shall determine to constitute a menace to the safety of aerial navigation to or from said airport, including the right to lay and maintain conduits and wires to such obstruction markers or lights. Proceedings for the condemnation of any of the rights mentioned in this section shall be governed in all respects by the laws of this state applicable to the condemnation by such municipality of easements in land for public purposes.
Ala. Code § 4-4-10 (1975)