{"abstract":"The FAA proposes to adopt 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 proposed 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 proposed AD would require removal from service of the affected LPC blades and replacement with a serviceable part. 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/2026/06/01/2026-10902.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"91 FR 32364","comment_url":"http://www.regulations.gov/commenton/FAA-2026-4648-0001","comments_close_on":"2026-07-16","correction_of":null,"corrections":[],"dates":"The FAA must receive comments on this NPRM by July 16, 2026.","disposition_notes":null,"docket_ids":["Docket No. FAA-2026-4648","Project Identifier MCAI-2025-01834-E"],"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":"2026-06-01","updated_at":"2026-06-10T00:04:49.596-04:00","comment_url":"https://www.regulations.gov/commenton/FAA-2026-4648-0001","allow_late_comments":false,"id":"FAA-2026-4648-0001","comment_end_date":"2026-07-17","regulations_dot_gov_open_for_comment":true}],"supporting_documents_count":1,"id":"FAA-2026-4648","title":"2026-NM-XXXX"}],"document_number":"2026-10902","effective_on":null,"end_page":32366,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/06/01/2026-10902.xml","html_url":"https://www.federalregister.gov/documents/2026/06/01/2026-10902/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-10902?publication_date=2026-06-01","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-06-01/2026-10902/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":128,"last_updated":"2026-06-12 20:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-06-01/pdf/2026-10902.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-10902.pdf?1780058727","publication_date":"2026-06-01","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/06/01/2026-10902.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-2026-4648-0001","regulation_id_number":"2120-AA64","title":"2026-NM-XXXX","checked_regulationsdotgov_at":"2026-06-10T04:04:48Z"},"regulations_dot_gov_url":"http://www.regulations.gov/commenton/FAA-2026-4648-0001","significant":false,"signing_date":null,"start_page":32364,"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":"Proposed Rule","volume":91}