{"abstract":"We are superseding Airworthiness Directive (AD) 2014-24-02 for Agusta S.p.A. (Agusta) Model AB139 and AW139 helicopters. AD 2014-24-02 required repetitively inspecting the main rotor (M/R) rotating scissors, removing certain lower half scissor spherical bearings (bearings) from service, and installing a special nut. This new AD revises the inspection requirements and requires replacing the bearings. This AD is prompted by a new report of a dislodged bearing of an M/R rotating scissor. The actions of this AD are intended to correct an unsafe condition on these products.","action":"Final rule; request for comments.","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/2017/11/24/2017-24738.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"82 FR 55752","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective December 11, 2017.","disposition_notes":null,"docket_ids":["Docket No. FAA-2017-0982","Product Identifier 2017-SW-009-AD","Amendment 39-19102","AD 2017-23-08"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supporting  AD Documents","document_id":"FAA-2017-0982-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2017-11-24","updated_at":"2023-03-01T15:59:06.702-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2017-0982-0001","allow_late_comments":null,"id":"FAA-2017-0982-0001","comment_end_date":"2018-01-24","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2017-0982","title":"Agusta S.p.A. Model AB139 and AW139 helicopters, to require repetitively inspecting the main rotor rotating scissors, replacing certain lower half scissor spherical bearings, and installing a special nut.\t2017-SW-009-AD\n\n"}],"document_number":"2017-24738","effective_on":"2017-12-11","end_page":55755,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2017/11/24/2017-24738.xml","html_url":"https://www.federalregister.gov/documents/2017/11/24/2017-24738/airworthiness-directives-agusta-spa-helicopters","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2017-24738?publication_date=2017-11-24","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2017-11-24/2017-24738/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":253,"last_updated":"2026-08-25 06:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2017-11-24/pdf/2017-24738.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2017-24738.pdf?1511358323","publication_date":"2017-11-24","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2017/11/24/2017-24738.txt","regulation_id_number_info":{"2120-AA64":{"issue":"202410","html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202410&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 - Supporting  AD Documents","document_id":"FAA-2017-0982-0002"}],"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-2017-0982","supporting_documents_count":1,"docket_id":"FAA-2017-0982","document_id":"FAA-2017-0982-0001","regulation_id_number":"2120-AA64","title":"Agusta S.p.A. Model AB139 and AW139 helicopters, to require repetitively inspecting the main rotor rotating scissors, replacing certain lower half scissor spherical bearings, and installing a special nut.\t2017-SW-009-AD\n\n","checked_regulationsdotgov_at":"2023-03-01T20:59:05Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":55752,"subtype":null,"title":"Airworthiness Directives; Agusta S.p.A. Helicopters","toc_doc":"Agusta S.p.A. Helicopters","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":82}