CFR›Title 14›Chapter II›Part 399›Subpart K ContainsSection 399.120CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart K—Policies Relating to Certificate Duration Sections 399.120 § 399.120 Duration of certificates in limited-entry markets. Previous H Subpart H—Other Policies Relating to Interests, Activities, and Relationships of Air Carriers