49 U.S.C. § 321
Section 321 · Definitions
Amended 4 times on record
Applied in 32 court decisions — leading case Knowlton v. Allied Van Lines, Inc. (1990)
Most recently applied in McKamey v. Vander Houten (October 1999)
How often courts cite this section
Court decisions citing this, by year.Markers show enactment, consequential amendments, and circuit splits over this section — watch for a citation surge after a change or a disagreement. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
In this subchapter, “aeronautics”, “air commerce”, and “air navigation facility” have the same meanings given those terms in section 40102(a) of this title.
Editorial notes U.S. Code · Office of the Law Revision Counsel
A number of the source provisions of the subchapter are taken from 49:ch. 20. The text of 49:ch. 20 contains general definitions, some of which are used in those source provisions. The section includes those definitions from 49:ch. 20 that are used in the source provisions included in the subchapter.
Pub. L. 103–429
This makes a clarifying amendment to 49:321.
Amendments
1994—Pub. L. 103–429 struck out “, respectively” after “of this title”.
Pub. L. 103–272 substituted “section 40102(a) of this title” for “section 101(2), (4), and (8) of the Federal Aviation Act of 1958 (49 App. U.S.C. 1301(2), (4), (8))”.
1984—Pub. L. 98–216 substituted “49 App. U.S.C.” for “49 U.S.C.”.
Effective Date of 1994 Amendment
Section 9 of Pub. L. 103–429 provided that: “The amendments made by sections 6(2)–(15), (19)–(35), (37)–(39), (41), (44)–(52), (54)–(62), (65), (66)(B), (70), (73)–(76), and (78)–(81) of this Act [enacting section 41312 of this title and amending this section and sections 5103, 5104, 5115, 5125, 5307, 5318, 5320, 5323, 5326, 5327, 5331, 5337, 5565, 20136, 22108, 24501, 24904, 30141, 30165, 30166, 30308, 31501, 32101, 32304, 32309, 32505, 32703, 32705, 32706, 32908 to 32910, 32913, 33101, 33106, 40102, 40104, 40110, 41103, 41110, 41734, 44502, 44701, 44711, 44937, 45105, 45302, 46301, 46310, 46502, 47101, 47113, 47114, 47128, 47531, 47532, 60109, and 60112 of this title] shall take effect on July 5, 1994.”