; (2) include a means of referral to the website of the Department of Transportation with respect to any other required disclosures to air transportation passengers; (3) make no changes to air carrier or ticket agent obligations with respect to— (A) section 41712(c) of title 49, United States Code; or (B) subsections (a) and (b) of section 399.84 of title 14, Code of Federal Regulations (or any successor regulations); and (4) require disclosures referred to in paragraphs (1) and (2) to be made in the manner existing prior to the date of enactment of this Act upon passenger request. (c) Air carrier defined In this section, the term air carrier has the meaning given such term in section 40102(a) of title 49, United States Code. 514. GAO study on competition and consolidation in the air carrier industry (a) Study The Comptroller General shall conduct a study assessing competition and consolidation in the United States air carrier industry. Such study shall include an assessment of data related to— (1) the history of mergers in the United States air carrier industry, including whether any claimed efficiencies have been realized; (2) the effect of consolidation in the United States air carrier industry, if any, on consumers; (3) the effect of consolidation in the United States air carrier industry, if any, on air transportation service in small and rural markets