Michigan Compiled Laws, Chapter 120. Port Districts § 120.116

Sec. 16. Revenue bonds issued pursuant to this act shall be secured by a trust agreement by and between the authority and a corporate trustee, which may be any trust company or bank having the powers of a trust company, within or without the state. The trust agreement may pledge or assign the rentals and other revenues of the authority, but shall not convey or mortgage part or all of a project. The trust agreement shall contain provisions for protecting and enforcing the rights and remedies of the bondholders as may be reasonable and proper and not in violation of law, including setting forth the duties of the authority in relation to the acquisition or construction of a project and the extension, enlargement, improvement, maintenance, operation, repair, and insurance of a project and the custody, safeguarding, and application of all money and may contain provisions for the employment of consulting engineers in connection with the construction and operation of a project. The trust agreement shall set forth the rights and remedies of the bondholders and of the trustee and may restrict the individual right of action by the bondholders and may contain any other provisions the authority may consider reasonable and proper for the security of the bondholders.