{"abstract":"The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A319 series airplanes; Model A320 series airplanes; and Model A321-111, -112, -131, -211, -212, -213, -231, -232, -251N, - 252N, -253N, -271N, -272N, -251NX, -252NX, -253NX, -271NX, and -272NX airplanes. This AD was prompted by aeroelastic stability assessments that indicate that reduced stability margins may exist due to accumulation of additional mass from rudder repainting or repairs. This AD requires airframe vibration troubleshooting after an airframe vibration event, reporting results, and applicable on-condition actions. The FAA is issuing this AD to address the 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/2026/05/29/2026-10800.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 31889","comment_url":"http://www.regulations.gov/commenton/FAA-2026-4645-0001","comments_close_on":"2026-06-13","correction_of":null,"corrections":[],"dates":"This AD is effective June 15, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-4645","Project Identifier MCAI-2026-00451-T","Amendment 39-23365","AD 2026-11-04"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-4645-0003"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-4645-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-05-29","updated_at":"2026-06-10T00:09:49.554-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-4645-0001","allow_late_comments":false,"id":"FAA-2026-4645-0001","comment_end_date":"2026-07-14","regulations_dot_gov_open_for_comment":true}],"supporting_documents_count":2,"id":"FAA-2026-4645","title":"MCAI-2026-00451-T; Airbus SAS Model A319, A320, and A321 airplanes; rudder"}],"document_number":"2026-10800","effective_on":"2026-06-15","end_page":31893,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/05/29/2026-10800.xml","html_url":"https://www.federalregister.gov/documents/2026/05/29/2026-10800/airworthiness-directives-airbus-sas-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-10800?publication_date=2026-05-29","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-05-29/2026-10800/mods.xml","not_received_for_publication":null,"page_length":5,"page_views":{"count":163,"last_updated":"2026-06-25 08:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-05-29/pdf/2026-10800.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-10800.pdf?1779912909","publication_date":"2026-05-29","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/05/29/2026-10800.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-2026-4645-0003"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-4645-0002"}],"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-2026-4645","supporting_documents_count":2,"docket_id":"FAA-2026-4645","document_id":"FAA-2026-4645-0001","regulation_id_number":"2120-AA64","title":"MCAI-2026-00451-T; Airbus SAS Model A319, A320, and A321 airplanes; rudder","checked_regulationsdotgov_at":"2026-06-25T04:03:35Z"},"regulations_dot_gov_url":"http://www.regulations.gov/commenton/FAA-2026-4645-0001","significant":false,"signing_date":null,"start_page":31889,"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}