{"abstract":"The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.a. Model AB139, AW139, and AW189 helicopters. This AD was prompted by a report of cracks on the left-hand (LH) and right-hand (RH) tube assemblies installed on the brake pedal assemblies. This AD requires repetitively inspecting the LH and RH tube assemblies for Model AB139 and AW139 helicopters, and the LH and RH pedal shaft assemblies for Model AW189 helicopters, and depending on the results of the inspection, corrective actions. This AD also prohibits installing certain parts unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.","action":"Final rule.","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/2026/05/21/2026-10170.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 29890","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective June 25, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-0025","Project Identifier MCAI-2025-01294-R","Amendment 39-23343","AD 2026-10-03"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-0025-0006"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-0025-0004"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-0025-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-05-21","updated_at":"2026-05-21T10:02:57.362-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-0025-0005","allow_late_comments":false,"id":"FAA-2026-0025-0005","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":3,"id":"FAA-2026-0025","title":"MCAI-2025-01294-R; LEONARDO S.p.A. AB139, AW139 and AW189 Rotors Flight Control – Brake Pedal Assembly"}],"document_number":"2026-10170","effective_on":"2026-06-25","end_page":29892,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/05/21/2026-10170.xml","html_url":"https://www.federalregister.gov/documents/2026/05/21/2026-10170/airworthiness-directives-leonardo-spa-helicopters","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-10170?publication_date=2026-05-21","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-05-21/2026-10170/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":124,"last_updated":"2026-06-27 10:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-05-21/pdf/2026-10170.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-10170.pdf?1779281113","publication_date":"2026-05-21","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/05/21/2026-10170.txt","regulation_id_number_info":{"2120-AA64":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&RIN=2120-AA64&operation=OPERATION_EXPORT_XML","priority_category":"Routine and Frequent"}},"regulation_id_numbers":["2120-AA64"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-0025-0004"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-0025-0002"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives"},"comments_count":0,"agency_id":"FAA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2026-0025","supporting_documents_count":2,"docket_id":"FAA-2026-0025","document_id":"FAA-2026-0025-0005","regulation_id_number":"2120-AA64","title":"MCAI-2025-01294-R; LEONARDO S.p.A. AB139, AW139 and AW189 Rotors Flight Control – Brake Pedal Assembly","checked_regulationsdotgov_at":"2026-05-22T16:55:04Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":29890,"subtype":null,"title":"Airworthiness Directives; Leonardo S.p.a. Helicopters","toc_doc":"Leonardo S.p.a. Helicopters","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":91}