{"abstract":"The FAA is superseding Airworthiness Directive (AD) 2024-04- 06, which applied to certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500-1A11 airplanes. AD 2024-04-06 required repetitive operational checks of the gravity cross flow shut-off valve and, for certain airplanes, a one-time inspection of the motive flow fuel-feed tubes at the clamp blocks location and applicable corrective actions. Since the FAA issued AD 2024-04-06, the manufacturer developed additional corrective actions. This AD continues to require the actions in AD 2024-04-06 and requires replacement of the saddle clamp, inspection of the motive flow fuel-feed tubes, and applicable corrective actions. 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/2026/05/27/2026-10491.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 31349","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective July 1, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2025-5024","Project Identifier MCAI-2025-00797-T","Amendment 39-23352","AD 2026-10-12"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2025-5024-0007"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2025-5024-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-05-27","updated_at":"2026-05-27T08:58:40.906-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2025-5024-0006","allow_late_comments":false,"id":"FAA-2025-5024-0006","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"id":"FAA-2025-5024","title":"MCAI-2025-00797-T; Airbus Canada Limited Partnership Model BD-500-1A10/-1A11 series airplanes; Motive Flow Fuel-feed Tubes Damaged at Bonding Clamp and Clamp Block Locations"}],"document_number":"2026-10491","effective_on":"2026-07-01","end_page":31353,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/05/27/2026-10491.xml","html_url":"https://www.federalregister.gov/documents/2026/05/27/2026-10491/airworthiness-directives-airbus-canada-limited-partnership-type-certificate-previously-held-by-c","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-10491?publication_date=2026-05-27","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-05-27/2026-10491/mods.xml","not_received_for_publication":null,"page_length":5,"page_views":{"count":121,"last_updated":"2026-07-26 12:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-05-27/pdf/2026-10491.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-10491.pdf?1779799514","publication_date":"2026-05-27","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/05/27/2026-10491.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-2025-5024-0007"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2025-5024-0002"}],"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-2025-5024","supporting_documents_count":2,"docket_id":"FAA-2025-5024","document_id":"FAA-2025-5024-0006","regulation_id_number":"2120-AA64","title":"MCAI-2025-00797-T; Airbus Canada Limited Partnership Model BD-500-1A10/-1A11 series airplanes; Motive Flow Fuel-feed Tubes Damaged at Bonding Clamp and Clamp Block Locations","checked_regulationsdotgov_at":"2026-06-09T16:07:25Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":31349,"subtype":null,"title":"Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes","toc_doc":"Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":91}