(a) The certificate of incorporation of any authority incorporated under or governed by this chapter may be amended in the manner provided in this section. The board shall first adopt a resolution proposing an amendment to the certificate of incorporation which shall be set forth in full in the resolution and which amendment may include any matters which might have been included in the original certificate of incorporation.
(b) After the adoption by the board of a resolution proposing an amendment to the certificate of incorporation of the authority, the chair of the board or executive director of the authority and the secretary of the authority shall sign and file a written application in the name of and on behalf of the authority, under its seal, with the governing body of the authorizing county and with the governing body of the principal municipality, requesting each governing body to adopt a resolution approving the proposed amendment, and accompanied by a certified copy of the resolution adopted by the board proposing the amendment to the certificate of incorporation, together with the documents in support of the application as the chair or executive director may consider appropriate. The applications, except in their designation of the governing body to which they are addressed and with which they are filed, shall be identical. As promptly as may be practicable after the filing of the application with the governing bodies of the authorizing county and the principal municipality pursuant to the foregoing provisions of this section, the governing bodies shall review the application and shall adopt resolutions either denying the application or authorizing the proposed amendment. Each governing body shall cause a copy of the application and all accompanying documents to be spread upon or otherwise made a part of the minutes of the meeting of the governing body at which final action upon the application is taken.
(c) Within 40 days following the adoption of a resolution approving the proposed amendment by that governing body that was the last to adopt the resolution, but only if the governing bodies of both the authorizing county and the principal municipality have previously adopted a resolution, the chair of the board or executive director of the authority and the secretary of the authority shall sign and file for record in the office of the judge of probate of the authorizing county a certificate in the name of and in behalf of the authority, under its seal, reciting the adoption of the respective resolutions by the board and by the governing bodies of the authorizing county and the principal municipality and setting forth the proposed amendment.