{"abstract":"This rule codifies and augments the Department of Transportation's disclosure rules and policies concerning change-of- gauge services--i.e., services with one flight number that require a change of aircraft--in order to ensure that prospective airline consumers are given pertinent information on the nature of these services. The rule applies to U.S. air carriers, foreign air carriers, and, where appropriate, ticket agents (including travel agents) doing business in the United States. It includes the following requirements: That transporting carriers include notice of required aircraft changes in their written and electronic schedule information provided to the public, to the Official Airline Guide (OAG) and comparable publications, and to computer reservations systems, that consumers be given reasonable and timely oral notice that a service with a single flight number that they are considering booking entails a change of aircraft en route, and that written notice of the aircraft change be provided along with any ticket.","action":"Final rule.","agencies":[{"raw_name":"Office of the Secretary"},{"raw_name":"DEPARTMENT OF TRANSPORTATION","name":"Transportation Department","id":492,"url":"https://www.federalregister.gov/agencies/transportation-department","json_url":"https://www.federalregister.gov/api/v1/agencies/492","parent_id":null,"slug":"transportation-department"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/1999/03/15/99-6137.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"258","title":14}],"citation":"64 FR 12854","comment_url":null,"comments_close_on":"1999-05-14","correction_of":null,"corrections":[],"dates":"This regulation is effective July 13, 1999. Comments on the information collection requirements must be received on or before May 14, 1999.","disposition_notes":null,"docket_ids":["Docket Nos. OST-1995-177, 47546, 45911, 45912, and 45913"],"dockets":[],"document_number":"99-6137","effective_on":"1999-07-13","end_page":12860,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1999/03/15/99-6137/disclosure-of-change-of-gauge-services","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/99-6137?publication_date=1999-03-15","mods_url":"https://www.govinfo.gov/metadata/granule/FR-1999-03-15/99-6137/mods.xml","not_received_for_publication":null,"page_length":7,"page_views":{"count":49,"last_updated":"2026-08-24 18:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-1999-03-15/pdf/99-6137.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"1999-03-15","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1999/03/15/99-6137.txt","regulation_id_number_info":{"2105-AC17":{"issue":"199810","html_url":"https://www.federalregister.gov/regulations/2105-AC17/disclosure-of-change-of-gauge-services","title":"Disclosure of Change-of-Gauge Services","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=199810&RIN=2105-AC17&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2105-AC17"],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-09-21T01:49:30Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":12854,"subtype":null,"title":"Disclosure of Change-of-Gauge Services","toc_doc":null,"toc_subject":null,"topics":[],"type":"Rule","volume":64}