11 U.S.C. § 928 : US Code - Section 928: Post petition effect of security interest

Search 11 U.S.C. § 928 : US Code - Section 928: Post petition effect of security interest

(a) Notwithstanding section 552(a) of this title and subject to
subsection (b) of this section, special revenues acquired by the
debtor after the commencement of the case shall remain subject to
any lien resulting from any security agreement entered into by the
debtor before the commencement of the case.
(b) Any such lien on special revenues, other than municipal
betterment assessments, derived from a project or system shall be
subject to the necessary operating expenses of such project or
system, as the case may be.