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PART 139 - CERTIFICATION OF AIRPORTS Authority:49 U.S.C. 106(g), 40113, 44701-44706, 44709, 44719. Source:Docket No. FAA-2000-7479, 69 FR 6424, Feb. 10, 2004, unless otherwise noted. Editorial Note:Nomenclature changes to part 139 appear at 69 FR 24069, May 3, 2004.