{"abstract":"The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) Model RB211 Trent 768-60, 772-60, and 772B-60 engines. This AD was prompted by a report that a batch of low-pressure compressor (LPC) blades were exposed to a non- conforming repair and are more prone to cracking due to a deviation from the approved blade configuration design. This AD requires removal from service of the affected LPC blades and replacement with a serviceable part. 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/2026/10/13/2026-20869.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 64751","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective November 17, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-4648","Project Identifier MCAI-2025-01834-E","Amendment 39-23484","AD 2026-20-11"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental AD Documents","document_id":"FAA-2026-4648-0002"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2026-10-13","updated_at":"2026-10-13T09:57:41.038-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-4648-0004","allow_late_comments":false,"id":"FAA-2026-4648-0004","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2026-4648","title":"MCAI-2025-01834-E; Rolls-Royce Deutschland Ltd & Co KG RB211 Trent 700 Engines; ATA 72 – Engine – Low Pressure Compressor Blades – Removal from Service"}],"document_number":"2026-20869","effective_on":"2026-11-17","end_page":64753,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/10/13/2026-20869.xml","html_url":"https://www.federalregister.gov/documents/2026/10/13/2026-20869/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-20869?publication_date=2026-10-13","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-10-13/2026-20869/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":115,"last_updated":"2026-10-13 16:15:09 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-10-13/pdf/2026-20869.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-20869.pdf?1791549919","publication_date":"2026-10-13","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/10/13/2026-20869.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-2026-4648-0002"}],"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-2026-4648","supporting_documents_count":1,"docket_id":"FAA-2026-4648","document_id":"FAA-2026-4648-0004","regulation_id_number":"2120-AA64","title":"MCAI-2025-01834-E; Rolls-Royce Deutschland Ltd & Co KG RB211 Trent 700 Engines; ATA 72 – Engine – Low Pressure Compressor Blades – Removal from Service","checked_regulationsdotgov_at":"2026-10-13T20:55:13Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":64751,"subtype":null,"title":"Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines","toc_doc":"Rolls-Royce Deutschland Ltd and Co KG Engines","toc_subject":"Airworthiness Directives","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":91}