CFR›Title 49›Subtitle B›Chapter VIII›Part 821›49 CFR Part 821 Subpart A Citation49 CFR Part 821 Subpart AContainsSections § 821.1–§ 821.3CorpusDaily eCFRDisplayed edition2026-09-18Last updated2026-09-18 Subpart A—General Provisions Sections § 821.1 § 821.1 Definitions. § 821.2 § 821.2 Applicability and description of part. § 821.3 § 821.3 Description of docket numbering system. Authority49 U.S.C. 1101-1155, 44701-44723, 46301, Pub. L. 112-153, unless otherwise noted.Source68 FR 22625, Apr. 29, 2003, unless otherwise noted.