CFR›Title 14›Chapter II›Part 399›14 CFR Part 399 Subpart K Citation14 CFR Part 399 Subpart KContainsSection § 399.120CorpusDaily eCFRDisplayed edition2026-08-05Last updated2026-08-05 Subpart K—Policies Relating to Certificate Duration Sections § 399.120 § 399.120 Duration of certificates in limited-entry markets. Authority49 U.S.C. 41712, 40113(a).SourcePS-21, 29 FR 1446, Jan. 29, 1964, unless otherwise noted.