14 C.F.R. § 252.2 Applicability.
Title 14 - Aeronautics and Space
This part applies to all operations of air carriers engaged in interstate, intrastate and foreign air transportation and to foreign air carriers engaged in foreign air transportation, but does not apply to the on-demand services of air taxi operators.
Title 14: Aeronautics and Space
PART 252—SMOKING ABOARD AIRCRAFT
§ 252.2 Applicability.