[Code of Federal Regulations] [Title 14, Volume 4] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR221.91] [Page 69] 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. 221.91 Delivering tariff publications to Department. Tariff publications will be received for filing only by delivery thereof to the Department electronically, through normal mail channels, or by delivery thereof during established business hours directly to that office of the Department charged with the responsibility of processing tariffs. No tariff publication will be accepted by the Department unless it is delivered free from all charges, including claims for postage.