SUBPART D—Exemption Requests; Revocation of Exemptions (§66.31 to §66.35)
- 66.31—Exemptions based on an order, extension or suspension.
- 66.32—De Minimis exemptions.
- 66.33—De Minimis exemptions: malfunctions.
- 66.34—Termination of exemptions.
- 66.35—Revocation of exemptions.