49 U.S.C. § 41504 — Tariffs for foreign air transportation

(a) Filing tariffs. Following the Secretary of Transportation's regulations, every air carrier and foreign air carrier must file with the Secretary, publish, and keep open for public inspection, tariffs showing prices for foreign air transportation — both between places it serves, and between its places and those served by another carrier with which it has through service and joint prices. A tariff (1) must contain (A) a description of related classifications, rules, and practices, to the extent the Secretary requires, (B) a statement of prices in U.S. dollars, and (C) any other information the Secretary requires; and (2) may contain (A) prices stated in foreign money, and (B) information required under a foreign country's laws where the carrier is authorized to operate. (b) Changing a tariff. (1) Except as provided in paragraph (2), a carrier may change a price, classification, rule, or practice in its foreign air transportation tariff only after filing, publishing, and posting notice of the change at least 30 days ahead — the same way a tariff itself is filed. The Secretary may allow at least 25 days' notice instead, to let a carrier match a competitor's price change. The notice must clearly state the proposed change and its effective date. (2) If a proposed change would start a passenger fare outside the range described in section 41509(e)(2) and (3), the change can only take effect after 60 days' notice under the Secretary's regulations. (c) Rejecting changes. The Secretary may reject a tariff or tariff change that does not comply with this section or the Secretary's regulations. A rejected tariff or change is void.