{"abstract":"The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 airplanes. This AD was prompted by a manufacturing investigation that found improper application of the fastener retorque process at the center wing box (CWB) and belly fairing (BF) junctions could lead to insufficient clamping. This AD requires replacing each affected part and applying additional head nut cap protection. 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/2026/06/09/2026-11511.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 34750","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective July 14, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-3475","Project Identifier MCAI-2025-01561-T","Amendment 39-23374","AD 2026-12-04"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-3475-0005"},{"title":"US DOT/FAA- AD Supplemental Document","document_id":"FAA-2026-3475-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-06-09","updated_at":"2026-06-09T09:57:42.839-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-3475-0004","allow_late_comments":false,"id":"FAA-2026-3475-0004","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"id":"FAA-2026-3475","title":"MCAI-2026-01561-T; Airbus SAS Model A350-941 airplanes; Centre Wing Box and Belly Fairing Fasteners"}],"document_number":"2026-11511","effective_on":"2026-07-14","end_page":34752,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/06/09/2026-11511.xml","html_url":"https://www.federalregister.gov/documents/2026/06/09/2026-11511/airworthiness-directives-airbus-sas-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-11511?publication_date=2026-06-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-06-09/2026-11511/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":104,"last_updated":"2026-06-15 20:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-06-09/pdf/2026-11511.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-11511.pdf?1780922713","publication_date":"2026-06-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/06/09/2026-11511.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-2026-3475-0005"},{"title":"US DOT/FAA- AD Supplemental Document","document_id":"FAA-2026-3475-0002"}],"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-2026-3475","supporting_documents_count":2,"docket_id":"FAA-2026-3475","document_id":"FAA-2026-3475-0004","regulation_id_number":"2120-AA64","title":"MCAI-2026-01561-T; Airbus SAS Model A350-941 airplanes; Centre Wing Box and Belly Fairing Fasteners","checked_regulationsdotgov_at":"2026-06-10T15:55:04Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":34750,"subtype":null,"title":"Airworthiness Directives; Airbus SAS Airplanes","toc_doc":"Airbus SAS Airplanes","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":91}