Pub. L. 85-726, tit. IV, sec. 416
Classification and Exemption of Carriers
Classification and Exemption of Carriers classification Sec. 416. (a) The Board may from time to time establish such just and reasonable classifications or groups of air carriers for the purposes of this title as the nature of the services performed by such air carriers shall require; and such just and reasonable rules and regulations, pursuant to and consistent with the provisions of this title, to be observed by each such class or group, as the Board finds necessary in the public interest. exemptions (b) (1) The Board, from time to time and to the extent necessary, may (except as provided in paragraph (2) of this subsection) exempt from the requirements of this title or any provision thereof, or any rule, regulation, term, condition, or limitation prescribed thereunder, any air carrier or class of air carriers, if it finds that the enforcement of this title or such provision, or such rule, regulation, term, condition, or limitation is or would be an undue burden on such air carrier or class of air carriers by reason of the limited extent of, or unusual circumstances affecting, the operations of such air carrier or class of air carriers and is not in the public interest. (2) The Board shall not exempt any air carrier from any provision of subsection (k) of section 401 of this title, except that (A) any air carrier not engaged in scheduled air transportation, and (B), to the extent that the operations of such air carrier are conducted during daylight hours, any air carrier engaged in scheduled air transportation, may be exempted from the provisions of paragraphs (1) and (2) of such subsection if the Board finds, after notice and hearing, that, by reason of the limited extent of, or unusual circumstances affecting, the operations of any such air carrier, the enforcement of such paragraphs is or would be such an undue burden on such air carrier as to obstruct its development and prevent it from beginning or continuing operations, and that the exemption of such air carrier from such paragraphs would not adversely affect the public interest: Provided, That nothing in this subsection shall be deemed to authorize the Board to exempt any air carrier from any requirement of this title, or any provision thereof, or any rule, regulation, term, condition, or limitation prescribed thereunder which provides for maximum flying hours for pilots or copilots.