(1) If the authority defaults in the payment of principal of or interest on any issue of notes or bonds after the same shall become due, whether at maturity or upon call for redemption, and such default continues for a period of 30 days, or if the authority fails or refuses to comply with the provisions of this act, or defaults in any agreement made with the holders of any issue of notes or bonds, the holders of 25% in aggregate principal amount of the notes or bonds of such issue then outstanding, by instrument or instruments filed in the office of the clerk of the county of Ingham and approved or acknowledged in the same manner as a deed to be recorded, may appoint a trustee to represent the holders of such notes or bonds for the purposes herein provided.

    (2) The trustee may, and upon written request of the holders of 25% in principal amount of such notes or bonds then outstanding shall, in his own name; (a) by action or proceeding, enforce all rights of the noteholders or bondholders, including the right to require the authority to collect fees and charges and interest and amortization payments on mortgage loans made by it adequate to carry out any agreement as to, or pledge of, such fees and charges and interest and amortization payments on such mortgages, and other properties and to require the authority to carry out any other agreements with the holders of such notes or bonds and to perform its duties under this act; (b) bring suit upon such notes or bonds; (c) by action, require the authority to account as if it were the trustee of an express trust for the holders of such notes or bonds; (d) by action, enjoin any acts or things which may be unlawful or in violation of the rights of the holders of such notes or bonds; (e) declare all such notes or bonds due and payable, and if all defaults shall be made good, then, with the consent of the holders of 25% of the principal amount of such notes or bonds then outstanding, to annul such declaration and its consequences.