(1) The resolution creating the airport authority shall designate the counties, cities, incorporated villages, and townships to be included therein and shall set forth the fact that a sum of money not to exceed 1 mill of their assessed valuation as last equalized by the state may be requested and certified by the airport authority board annually for the purpose of planning, promoting, acquiring, constructing, improving, enlarging, extending, owning, maintaining, and operating the necessary landing, navigational, and building facilities of 1 or more community airports. The resolution also shall provide that the requested money or any portion of the requested money may be pledged by the governing body of the airport authority for the payment of revenue bonds under Act No. 94 of the Public Acts of 1933, as amended, being section 141.101 to 141.139 of the Michigan Compiled Laws. The authority shall be deemed to be a charter authority within the meaning of section 6 of article 9 of the state constitution of 1963. The resolution may provide that the airport authority shall become operative if a specified number of the proposed number of members bodies approve it. The resolution may fix a time within which the respective local units must act in order to be included in the airport authority. The resolution may designate a date for the appointed representatives to convene.

    (2) Any county, city, incorporated village, or township may subsequently become a member of any airport authority formed under this act upon resolution adopted by the governing body of the municipality and acceptance by resolution adopted by majority vote of the entire governing board of the airport authority. Any county, city, incorporated village, or township which is or becomes a member of an airport authority, upon request and upon resolution of its governing body, duly accepted by a 2/3 majority vote of the entire governing board of the airport authority, may be released from membership in the airport authority. A county, city, incorporated village, or township may not be released from membership in any airport authority formed under this act until all outstanding obligations of the airport authority that have been incurred after the time of the admission to membership of the county, city, incorporated village, or township and that part of prior obligations as may be agreed to by the board and the governing body of the county, city, incorporated village, or township have been paid, or adequate provision has been made for the payment thereof.