CFR›Title 40›Chapter I›Part 66›Subpart D ContainsSections 66.31–66.35CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart D—Exemption Requests; Revocation of Exemptions Sections 66.31 § 66.31 Exemptions based on an order, extension or suspension. 66.32 § 66.32 De Minimis exemptions. 66.33 § 66.33 De Minimis exemptions: malfunctions. 66.34 § 66.34 Termination of exemptions. 66.35 § 66.35 Revocation of exemptions. Previous C Subpart C—Calculation of Noncompliance Penalties Next E Subpart E—Decisions on Exemption Requests and Challenges to Notices of Noncompliance