CFR›Title 45›Subtitle B›Chapter XVI›Part 1630›Subpart A ContainsSections 1630.1–1630.4CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart A—General Provisions Sections 1630.1 § 1630.1 Purpose. 1630.2 § 1630.2 Definitions. 1630.3 § 1630.3 Time. 1630.4 § 1630.4 Burden of proof. Next B Subpart B—Cost Standards and Prior Approval