{"abstract":"The FAA is adopting a new airworthiness directive (AD) for all General Electric Company (GE) Model CF34-10E2A1, CF34-10E5, CF34- 10E5A1, CF34-10E6, CF34-10E6A1, CF34-10E7, and CF34-10E7-B engines with certain part-numbered high-pressure turbine (HPT) shroud/low pressure turbine (LPT) nozzle assemblies installed. This AD was prompted by a report of failed retention features of the inner and outer support air ducts (commonly referred to as spoolies) discovered during engine disassembly. This AD requires a visual inspection of the combustion case for wear and gouges, repair if necessary, and rework of the affected HPT shroud/LPT nozzle assemblies to add a positive retention of the support air duct. 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/2025/05/22/2025-09205.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"90 FR 21855","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective June 26, 2025.","disposition_notes":null,"docket_ids":["Docket No. FAA-2024-1883","Project Identifier AD-2023-01120-E","Amendment 39-23038","AD 2025-10-04"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Document","document_id":"FAA-2024-1883-0009"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2025-05-22","updated_at":"2025-05-22T09:07:23.129-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2024-1883-0008","allow_late_comments":false,"id":"FAA-2024-1883-0008","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2024-1883","title":"AD-2023-01120-E; General Electric Company Model CF34-10E engines; Combustion Case - Inspection / Repair"}],"document_number":"2025-09205","effective_on":"2025-06-26","end_page":21857,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2025/05/22/2025-09205.xml","html_url":"https://www.federalregister.gov/documents/2025/05/22/2025-09205/airworthiness-directives-general-electric-company-engines","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2025-09205?publication_date=2025-05-22","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2025-05-22/2025-09205/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":177,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2025-05-22/pdf/2025-09205.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2025-09205.pdf?1747831515","publication_date":"2025-05-22","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2025/05/22/2025-09205.txt","regulation_id_number_info":{"2120-AA64":{"issue":"202410","html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202410&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 Document","document_id":"FAA-2024-1883-0009"}],"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-2024-1883","supporting_documents_count":1,"docket_id":"FAA-2024-1883","document_id":"FAA-2024-1883-0008","regulation_id_number":"2120-AA64","title":"AD-2023-01120-E; General Electric Company Model CF34-10E engines; Combustion Case - Inspection / Repair","checked_regulationsdotgov_at":"2025-05-23T15:55:05Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":21855,"subtype":null,"title":"Airworthiness Directives; General Electric Company Engines","toc_doc":"General Electric Company Engines","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":90}