Mich. Comp. Laws § 12.277
In the discretion of the authority, any bond and any ancillary facility may be secured by a trust agreement or trust indenture by and between the authority and a trustee, which may be any trust company or bank having the powers of a trust company, whether located within or without this state. A trust agreement or trust indenture authorized under this subsection, or an authority resolution providing for the bond issue, may provide for creating and maintaining reserves as the authority determines proper and may include covenants setting forth the duties of the authority in relation to the bonds, the ancillary facilities, the income to the authority, and encumbered revenues. A trust agreement or trust indenture authorized under this subsection or an authority resolution under this act may contain provisions respecting the custody, safeguarding, and application of all money and bonds and may contain provisions for protecting and enforcing the rights and remedies of the owners of the bonds and parties to ancillary facilities as are reasonable and proper and not in violation of law. Any bank or trust company that acts as depository of the proceeds of bonds or of any other funds or obligations received on behalf of the authority may furnish indemnifying bonds or pledge obligations as the authority requires. Any trust agreement or trust indenture authorized under this subsection or an authority resolution may contain other provisions that the authority considers reasonable and proper for priorities and subordination among the owners of bonds and parties to ancillary facilities.
MCL 12.277