The certificate of incorporation of any authority incorporated under this chapter may be amended as follows:
(1) A resolution adopted by the board of directors proposing an amendment to the certificate of incorporation.
(2) The proposed amendment shall be set forth in full in the resolution, and which may include any matters which might have been included in the original certificate of incorporation.
(3) After the adoption of the resolution proposing an amendment to the certificate of incorporation of the authority, the chair of the board or other chief executive officer, 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 any documents in support of the application as the chair or other chief executive officer may consider appropriate. The application shall, except in its designation of the governing body to which they are addressed and with which they are filed, 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 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 also 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 the final action upon the application is taken. Within 40 days following the adoption of a resolution approving the proposed amendment by that governing body that was the last to adopt a resolution but only if the governing bodies of both the authorizing county and the principal municipality have adopted a resolution, the chair of the board or other chief executive officer 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 on behalf of the authority, under its seal, reciting the adoption of respective resolutions by the board and by the governing bodies of the authorizing county and the principal municipality and setting forth the proposed amendment.