{"abstract":"The FAA proposes to adopt a new airworthiness directive (AD) for all Leonardo S.p.a. Model AB139, AW139, and AW189 helicopters. This proposed 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 proposed AD would require 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 proposed AD would also prohibit installing certain parts unless certain requirements are met. The FAA is proposing this AD to address the unsafe condition on these products.","action":"Notice of proposed rulemaking (NPRM).","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/2026/01/26/2026-01463.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 3081","comment_url":null,"comments_close_on":"2026-03-12","correction_of":null,"corrections":[],"dates":"The FAA must receive comments on this NPRM by March 12, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-0025","Project Identifier MCAI-2025-01294-R"],"dockets":[{"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"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-01-26","updated_at":"2026-03-13T00:04:39.380-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-0025-0001","allow_late_comments":false,"id":"FAA-2026-0025-0001","comment_end_date":"2026-03-13","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"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":"2026-01463","effective_on":null,"end_page":3083,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/01/26/2026-01463.xml","html_url":"https://www.federalregister.gov/documents/2026/01/26/2026-01463/airworthiness-directives-leonardo-spa-helicopters","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-01463?publication_date=2026-01-26","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-01-26/2026-01463/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":143,"last_updated":"2026-05-12 10:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-01-26/pdf/2026-01463.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-01463.pdf?1769175926","publication_date":"2026-01-26","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/01/26/2026-01463.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-2026-0025-0001","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":"2026-03-13T04:04:38Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":3081,"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":"Proposed Rule","volume":91}