N.C. Gen. Stat. § 159C-12
Bonds issued under the provisions of this Chapter may be secured by a security document which may be a trust instrument between the authority and a bank or trust company or individual within the State, or a bank or a trust company without the State, as trustee. Such security document may pledge and assign the revenues provided for the security of the bonds, including proceeds from the sale of any project, or part thereof, insurance proceeds and condemnation awards, and may convey or mortgage the project and other property to secure a bond issue.
The revenues and other funds derived from the project, except such part thereof as may be necessary to provide reserves therefor, if any, shall be set aside at such regular intervals as may be provided in such security document in a sinking fund which may be thereby pledged to, and charged with, the payment of the principal of and the interest on such bonds as the same shall become due and the redemption price or the purchase price of bonds retired by call or purchase as therein provided. Such pledge shall be valid and binding from the time when the pledge is made. The revenues so pledged and thereafter received by the authority shall immediately be subject to the lien of such pledge without any physical delivery thereof or further act, and the lien of any such pledge shall be valid and binding as against all parties having claims of any kind in tort, contract or otherwise against the authority, irrespective of whether such parties have notice thereof. The use and disposition of money to the credit of such sinking fund shall be subject to the provisions of the security document. Such security document may contain such 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, without limitation, any one or more of the following:
It shall be lawful for any bank or trust company incorporated under the laws of this State which may act as depositary of the proceeds of bonds, revenues or other funds provided under this Chapter to furnish such indemnifying bonds or to pledge such securities as may be required by the authority. All expenses incurred in carrying out the provisions of such security document may be treated as a part of the cost of the project in connection with which bonds are issued or as an expense of administration of such project.
The authority may subordinate the bonds or its rights under the financing agreement or otherwise to any prior, contemporaneous or future securities or obligations or lien, mortgage or other security interest.
N.C. Gen. Stat. § 159C-12