{"abstract":"The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 airplanes. This proposed 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 proposed AD would require replacing each affected part and applying additional head nut cap protection. 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/2026/04/03/2026-06563.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 16867","comment_url":"http://www.regulations.gov/commenton/FAA-2026-3475-0001","comments_close_on":"2026-05-18","correction_of":null,"corrections":[],"dates":"The FAA must receive comments on this proposed AD by May 18, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-3475","Project Identifier MCAI-2025-01561-T"],"dockets":[{"supporting_documents":[{"title":"US DOT/FAA- AD Supplemental Document","document_id":"FAA-2026-3475-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-04-03","updated_at":"2026-04-12T01:55:57.371-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-3475-0001","allow_late_comments":false,"id":"FAA-2026-3475-0001","comment_end_date":"2026-05-19","regulations_dot_gov_open_for_comment":true}],"supporting_documents_count":1,"id":"FAA-2026-3475","title":"MCAI-2026-01561-T; Airbus SAS Model A350-941 airplanes; Centre Wing Box and Belly Fairing Fasteners"}],"document_number":"2026-06563","effective_on":null,"end_page":16869,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/04/03/2026-06563.xml","html_url":"https://www.federalregister.gov/documents/2026/04/03/2026-06563/airworthiness-directives-airbus-sas-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-06563?publication_date=2026-04-03","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-04-03/2026-06563/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":88,"last_updated":"2026-04-17 18:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-04-03/pdf/2026-06563.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-06563.pdf?1775133918","publication_date":"2026-04-03","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/04/03/2026-06563.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":"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":1,"docket_id":"FAA-2026-3475","document_id":"FAA-2026-3475-0001","regulation_id_number":"2120-AA64","title":"2026-NM-XXXX","checked_regulationsdotgov_at":"2026-04-12T11:55:04Z"},"regulations_dot_gov_url":"http://www.regulations.gov/commenton/FAA-2026-3475-0001","significant":false,"signing_date":null,"start_page":16867,"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":"Proposed Rule","volume":91}