N.C. Gen. Stat. § 131A-12
In the discretion of the Commission any bonds or notes issued under the provisions of this Article may be secured by a trust agreement by and between the Commission and a corporate trustee, which may be any trust company or bank having the powers of a trust company within or without the State. Such trust agreement or the resolution authorizing the issuance of such bonds or notes may pledge or assign all or any part of the revenues of the Commission received pursuant to this Article, including, without limitation, fees, loan repayments, purchase price payments, rents, charges, insurance proceeds, condemnation awards and any other revenues and funds received in connection with any health care facilities and may mortgage any health care facilities. Such trust agreement or resolution may contain such provisions for protecting and enforcing the rights and remedies of the holders of any such bonds or notes as may be reasonable and proper and not in violation of law, including covenants setting forth the duties of the Commission in relation to the purposes to which bond or note proceeds may be applied, the disposition or pledging of the revenues of the Commission, including any payments in respect of any federally guaranteed security or any federally insured mortgage note, the duties of the Commission with respect to the acquisition, construction, maintenance, repair and operation of any health care facilities, the fees, loan repayments, purchase price payments, rents and charges to be fixed and collected in connection therewith, the terms and conditions for the issuance of additional bonds or notes, and the custody, safeguarding and application of all moneys. All bonds issued under this Article shall be equally and ratably secured by a pledge, charge, and lien upon revenues provided for in such trust agreement or resolution, without priority by reason of number, or of dates of bonds, execution, or delivery, in accordance with the provisions of this Article and of such trust agreement or resolution; except that the Commission may provide in such trust agreement or resolution that bonds issued pursuant thereto shall to the extent and in the manner prescribed in such trust agreement or resolution be subordinated and junior in standing, with respect to the payment of principal and interest and the security thereof, to any other bonds. It shall be lawful for any bank or trust company incorporated under the laws of the State which may act as depositary of the proceeds of bonds or notes, revenues or other money hereunder to furnish such indemnifying bonds or to pledge such securities as may be required by the Commission. Any such trust agreement or resolution may set off the rights and remedies, including foreclosure of any mortgage, of the holders of any bonds or notes and of the trustee, and may restrict the individual right of action by any such holders. In addition to the foregoing, any such trust agreement or resolution may contain such other provisions as the Commission may deem reasonable and proper for the security of the holders of any bonds or notes. Expenses incurred in carrying out the provisions of such trust agreement or resolution may be treated as a part of the cost of any health care facilities or paid from the revenues pledged or assigned to the payment of the principal of and the interest on bonds or notes or from any other funds available to the Commission.
N.C. Gen. Stat. § 131A-12