{"abstract":"The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited (BTCL) Model 407 helicopters. This AD was prompted by a determination that chafing can occur at various locations on the electrical harnesses located in the aircraft instrument panel area. This AD requires a one-time detailed visual inspection of the electrical harnesses for chafing and corrective actions if necessary. This AD also requires rotation of the backshell cast housing of connectors of the lower engine airframe unit and installation of a wire harness bracket and support, and for certain helicopters, installation of a wire bundle sleeve. 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/2026/05/21/2026-10167.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 29888","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-2026-0736","Project Identifier MCAI-2025-00698-R","Amendment 39-23344","AD 2026-10-04"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-0736-0004"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-0736-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-05-21","updated_at":"2026-05-21T09:59:16.384-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-0736-0003","allow_late_comments":false,"id":"FAA-2026-0736-0003","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"id":"FAA-2026-0736","title":"MCAI-2025-00698-R; Bell Textron Canada Limited 407 – Electrical harness chafing condition"}],"document_number":"2026-10167","effective_on":"2026-06-25","end_page":29890,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/05/21/2026-10167.xml","html_url":"https://www.federalregister.gov/documents/2026/05/21/2026-10167/airworthiness-directives-bell-textron-canada-limited-helicopters","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-10167?publication_date=2026-05-21","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-05-21/2026-10167/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":164,"last_updated":"2026-06-01 12:15:06 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-05-21/pdf/2026-10167.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-10167.pdf?1779281113","publication_date":"2026-05-21","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/05/21/2026-10167.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-2026-0736-0002"}],"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-2026-0736","supporting_documents_count":1,"docket_id":"FAA-2026-0736","document_id":"FAA-2026-0736-0003","regulation_id_number":"2120-AA64","title":"MCAI-2025-00698-R; Bell Textron Canada Limited 407 – Electrical harness chafing condition","checked_regulationsdotgov_at":"2026-05-22T16:55:04Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":29888,"subtype":null,"title":"Airworthiness Directives; Bell Textron Canada Limited Helicopters","toc_doc":"Bell Textron Canada Limited Helicopters","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":91}