14 C.F.R. § 1261.502
(a) Before collecting any claims through administrative offset, a 30-day written notice must be sent to the debtor by certified mail, return receipt requested. The notice must include:
(3) An explanation of the debtor's rights under 31 U.S.C. 3716(a), or other relied upon statutory authority, which must include a statement that the debtor has the opportunity, within the 30-day notice period, to:
(b) NASA may effect administrative offset against a payment to be made to a debtor prior to the completion of the procedures required by paragraph (a) of this section if: