14 CFR § 399.120
Duration of certificates in limited-entry markets
July 13, 2020
All certificate authority that the Department grants to U.S. air carriers in carrier selection proceedings will be awarded in the form of experimental certificates of five years' duration pursuant to49 U.S.C. 41102 and 41110. This provision does not alter or amend permanent certificates issued prior to January 1, 1985.
[Doc. No. 43403, 51 FR 43188, Dec. 1, 1986, as amended by Doc. No. DOT-OST-2014-0140, 84 FR 15948, Apr. 16, 2019]