{"abstract":"The FAA proposes to adopt a new airworthiness directive (AD) for all Safran Helicopter Engines, S.A. (Safran) (type certificate previously held by Turbomeca, S.A.) Model Makila 1A, Makila 1A1, and Makila 1A2 engines. This proposed AD was prompted by a determination that the accumulated service life of certain critical parts was underestimated. This proposed AD would require determining the recalculated service life of certain critical parts, would require replacing the parts if necessary, and would also specify conditions for installing the parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. 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/2024/06/20/2024-13434.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"89 FR 51858","comment_url":null,"comments_close_on":"2024-08-05","correction_of":null,"corrections":[],"dates":"The FAA must receive comments on this NPRM by August 5, 2024.","disposition_notes":null,"docket_ids":["Docket No. FAA-2024-1691","Project Identifier MCAI-2023-01269-E"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2024-1691-0004"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2024-1691-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2024-06-20","updated_at":"2025-01-21T11:57:29.515-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2024-1691-0001","allow_late_comments":false,"id":"FAA-2024-1691-0001","comment_end_date":"2024-08-06","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"id":"FAA-2024-1691","title":"MCAI-2023-01269-E; Safran Helicopter Engines, S.A. Model Makila 1A, 1A1, and 1A2 engines; Critical Life-Limited Parts – Replacement"}],"document_number":"2024-13434","effective_on":null,"end_page":51861,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2024/06/20/2024-13434.xml","html_url":"https://www.federalregister.gov/documents/2024/06/20/2024-13434/airworthiness-directives-safran-helicopter-engines-sa-type-certificate-previously-held-by-turbomeca","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2024-13434?publication_date=2024-06-20","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2024-06-20/2024-13434/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":60,"last_updated":"2026-06-07 20:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2024-06-20/pdf/2024-13434.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2024-13434.pdf?1718714719","publication_date":"2024-06-20","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2024/06/20/2024-13434.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-2024-1691-0004"},{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2024-1691-0002"}],"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-2024-1691","supporting_documents_count":2,"docket_id":"FAA-2024-1691","document_id":"FAA-2024-1691-0001","regulation_id_number":"2120-AA64","title":"MCAI-2023-01269-E; Safran Helicopter Engines, S.A. Model Makila 1A, 1A1, and 1A2 engines; Critical Life-Limited Parts – Replacement","checked_regulationsdotgov_at":"2025-01-22T16:00:04Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":51858,"subtype":null,"title":"Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Engines","toc_doc":"Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Engines","toc_subject":"Airworthiness Directives:\n","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Proposed Rule","volume":89}