incorporation, duly certified by the secretary of state, shall be admissible in evidence in any suit, action, or proceeding.
§ 6. Commissioners; Compensation; Meetings; Officers.) A commissioner of an authority shall receive no compensation for his services, but shall be entitled to the necessary expense, including traveling expenses, incurred in the discharge of his duties. Each commissioner shall hold office until his successor has been appointed and has qualified. The certificates of the appointment and reappointment of commissioners shall be filed with the authority.
The powers of each authority shall be vested in the commissioners thereof. A majority of the commissioners of an authority shall constitute a quorum for the purpose of conducting business of the authority and exercising its powers and for all other purposes. Action may be taken by the authority upon a vote of not less than a majority of the commissioners present.
There shall be elected a chairman and vice chairman from among the commissioners. An authority may employ an executive director, secretary, technical experts, and such other officers, agents, and employees, permanent and temporary, as it may require, and shall determine their qualifications, duties, and compensation. For such legal services as it may require, an authority may call upon the chief law officer of the municipality or municipalities included in the authority or may employ its own counsel and legal staff. An authority may delegate to one or more of its agents or employees such powers or duties as it may deem proper.
§ 7. General Powers of an Authority.) An authority shall have all the powers necessary or convenient to carry out the purposes of this Act including the power to certify, annually to the governing bodies creating it, the amount of tax to be levied by said governing bodies for airport purposes including, but not limited to, the power:
1. To sue and be sued; to have a seal; and to have perpetual succession;
2. To execute such contracts and other instruments and take such other action as may be necessary or convenient to carry out the purposes of this Act;
3. To plan, establish, acquire, develop, construct, purchase, enlarge, improve, maintain, equip, operate, regulate, and protect airports and air navigation facilities. within this state and within any adjoining state, including the acquisition, construction, installation, equipment, maintenance, and operation at such airports or buildings and other facilities for the servicing of aircraft or for com-
