{"abstract":"The issuance of Advisory Circular (AC) 121-42B, Extended Operations (ETOPS) and Polar Operations, provides certificate holders with guidance for obtaining operational approval to conduct ETOPS under 14 CFR part 121. The issuance of AC 135-42, Extended Operations (ETOPS) and Operations in the North Polar Area, provides certificate holders with guidance for obtaining operational approval to conduct Extended Operations (ETOPS) under 14 CFR part 135.","action":"Notice of issuance of advisory circulars.","agencies":[{"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"},{"raw_name":"Federal Aviation Administration","name":"Federal Aviation Administration","id":159,"url":"https://www.federalregister.gov/agencies/federal-aviation-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/159","parent_id":492,"slug":"federal-aviation-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2008/07/01/E8-14879.html","cfr_references":[],"citation":"73 FR 37526","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Advisory Circular No. 120-42B was issued on June 18, 2008. Advisory Circular No. 135-42 was issued on June 12, 2008.","disposition_notes":null,"docket_ids":[],"dockets":[],"document_number":"E8-14879","effective_on":null,"end_page":37526,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2008/07/01/E8-14879.xml","html_url":"https://www.federalregister.gov/documents/2008/07/01/E8-14879/advisory-circulars-extended-operations-etops-and-polar-operations-ac-121-42b-and-extended-operations","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E8-14879?publication_date=2008-07-01","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2008-07-01/E8-14879/mods.xml","not_received_for_publication":null,"page_length":1,"page_views":{"count":322,"last_updated":"2026-04-04 20:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2008-07-01/pdf/E8-14879.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2008-07-01","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2008/07/01/E8-14879.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-11-14T10:42:36Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":37526,"subtype":null,"title":"Advisory Circulars: Extended Operations (ETOPS) and Polar Operations, AC 121-42B and Extended Operations (ETOPS) and Operations in the North Polar Area, AC 135-42","toc_doc":"Extended Operations and Polar Operations etc.","toc_subject":"Advisory Circulars:","topics":[],"type":"Notice","volume":73}