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PART 221 - TARIFFS Authority:49 U.S.C. 40101, 40109, 40113, 46101, 46102, chapter 411, chapter 413, chapter 415 and chapter 417, subchapter I. Source:64 FR 40657, July 27, 1999, unless otherwise noted. Editorial Note:Nomenclature changes to part 221 appear at 84 FR 15929, Apr. 16, 2019.