As used in this chapter, unless the context otherwise requires:

(1) AIR CARRIER. This term includes both a common carrier by aircraft and a contract carrier by aircraft.

(2) AIR COMMERCE. The carriage by aircraft of persons or property, or any class or classes thereof, for compensation or hire in intrastate commerce in this state, including such aircraft operations of carriers by rail, water or motor vehicle, and/or express or forwarding companies, except pilot training, flight instruction, sale of property and services for aircraft, engines and accessories.

(3) AIRCRAFT. Any contrivance now known or hereafter invented, used, or designed for navigation of or flight in the air.

(4) BROKER. Any person not included in the term "air carrier" and not a bona fide employee or agent of any such carrier, who or which, as principal or agent, sells or offers for sale any transportation subject to this chapter, or negotiates for or holds himself, or itself, out by solicitation, advertisement or otherwise as one who sells, provides, furnishes, contracts or arranges for such transportation.

(5) CERTIFICATE. A certificate of public convenience and necessity issued under this chapter to a common carrier by aircraft.

(6) CITIZEN OF THE UNITED STATES.

a. An individual who is a citizen of the United States or one of its possessions, territorial or otherwise, or

b. A partnership of which each member is such an individual, or

c. A corporation or association created or organized under the laws of the United States or of any state, territory or possession of the United States, of which the president and two-thirds or more of the board of directors and other managing officers thereof are such individuals, and in which at least 75 percent of the voting interest is owned or controlled by persons who are citizens of the United States or one of its possessions.

(7) COMMISSION. The Alabama Public Service Commission.

(8) COMMON CARRIER BY AIRCRAFT. Any person which holds itself out to the general public, whether directly or indirectly, or by a lease or other arrangement and, whether over regular or irregular routes, to engage in air commerce.

(9) CONTRACT CARRIER BY AIRCRAFT. Any person, who, except as provided in subsection (a) of Section 37-9-20, undertakes, otherwise than as a common carrier by aircraft, whether directly or indirectly, or by a lease or any other arrangement, to engage in air commerce.

(10) LICENSE. A license issued under this chapter to a broker.

(11) OVERCHARGES. Charges for transportation services in excess of those applicable thereto under the tariffs lawfully on file with the commission.

(12) PERMIT. A permit issued under this chapter to a contract carrier by aircraft.

(13) PERSON. Any individual, firm, copartnership, corporation, company, association, joint stock association or a body politic and includes any trustee, receiver, assignee or other similar representative thereof.

(14) SERVICE and TRANSPORTATION. Such terms include all aircraft operated by, for, or in the interest of any air carrier irrespective of ownership or of contract, express or implied, together with all facilities and property operated or controlled by any such carrier or carriers and used in air commerce or in the performance of any service in connection therewith.

(15) STATE. Any of the several states or the District of Columbia.