[Code of Federal Regulations] [Title 14, Volume 4] [Revised as of January 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR221.92] [Page 68] TITLE 14--AERONAUTICS AND SPACE CHAPTER II--OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) PART 221--TARIFFS--Table of Contents Subpart J--Filing Tariff Publications With Department Sec. 221.92 Number of copies required. Two copies of each paper tariff, tariff revision and adoption notice to be filed shall be sent to the Office of International Aviation, Department of Transportation, Washington, DC 20428. All such copies shall be included in one package and shall be accompanied by a letter of tariff transmittal.