14 C.F.R. § 129.29 Smoking prohibitions.
Title 14 - Aeronautics and Space
(a) No person may smoke and no operator may permit smoking in any aircraft lavatory. (b) Unless otherwise authorized by the Secretary of Transportation, no person may smoke and no operator may permit smoking anywhere on the aircraft (including the passenger cabin and the flight deck) during scheduled passenger foreign air transportation or during any scheduled passenger interstate or intrastate air transportation. [Doc. No. FAA–2000–7467, 65 FR 36780, June 9, 2000]
Title 14: Aeronautics and Space
PART 129—OPERATIONS: FOREIGN AIR CARRIERS AND FOREIGN OPERATORS OF U.S.-REGISTERED AIRCRAFT ENGAGED IN COMMON CARRIAGE
§ 129.29 Smoking prohibitions.