7 C.F.R. § 1786.205
(a) Any borrower seeking to prepay or refinance an advance from the FFB under this subpart should apply by letter to the appropriate RUS Regional Director or, in the case of power supply borrowers, to the Director of the Power Supply Division. The borrower will be required to submit applications and elections in a digital format to be supplied by RUS. The application letter shall provide the following:
(c) When the request for prepayment or refinancing is approved for processing the borrower will be provided with appropriate instructions, documents and forms which may include but are not limited to the following:
(8) Security instrument.
(Approved by the Office of Management and Budget under control number 0572-0032)