[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: 14CFR221.4] [Page 61] TITLE 14--AERONAUTICS AND SPACE CHAPTER II--OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) PART 221_TARIFFS--Table of Contents Subpart A_General Sec. 221.4 English language. All tariffs and other documents and material filed with the Department pursuant to this part shall be in the English language.