[Code of Federal Regulations] [Title 14, Volume 4] [Revised as of January 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR252.17] [Page 206] TITLE 14--AERONAUTICS AND SPACE CHAPTER II--OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) PART 252_SMOKING ABOARD AIRCRAFT--Table of Contents Sec. 252.17 Enforcement. Air carriers and foreign air carriers shall take such action as is necessary to ensure that smoking by passengers or crew is not permitted in the passenger cabin or lavatories on no-smoking flight segments. Air carriers shall take such action as is necessary to ensure that smoking by passengers or crew is not permitted in no-smoking sections or at other times or places where smoking is prohibited by this part, and to maintain required separation of passengers in smoking and no-smoking areas.