14 CFR §221.92
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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.