[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: 14CFR252.3] [Page 205] 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. 252.3 Smoking ban: air carriers. Air carriers shall prohibit smoking on all scheduled passenger flights.