{"abstract":"The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce plc (RR) Trent 768-60, Trent 772-60, and Trent 772B-60 turbofan engines. This AD requires removal from service of certain part numbers of high pressure (HP) compressor rotor shafts, based on a newly established reduced life limit. This AD is prompted by reports of HP compressor drums with small cracks in blade loading slots found at overhaul inspection. The HP compressor drums are an integral part of the HP compressor rotor shaft. We are issuing this AD to prevent possible uncontained HP compressor drum failure, which could result in damage to the airplane.","action":"Final rule; request for comments.","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/2003/09/09/03-22888.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"68 FR 53030","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective September 24, 2003.","disposition_notes":null,"docket_ids":["Docket No. 2003-NE-29-AD","Amendment 39-13300","AD 2003-18-09"],"dockets":[],"document_number":"03-22888","effective_on":"2003-09-24","end_page":53032,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2003/09/09/03-22888.xml","html_url":"https://www.federalregister.gov/documents/2003/09/09/03-22888/airworthiness-directives-rolls-royce-plc-trent-768-60-trent-772-60-and-trent-772b-60-turbofan","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/03-22888?publication_date=2003-09-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2003-09-09/03-22888/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":106,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2003-09-09/pdf/03-22888.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2003-09-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2003/09/09/03-22888.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":{"checked_regulationsdotgov_at":"2011-11-12T09:28:11Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":53030,"subtype":null,"title":"Airworthiness Directives; Rolls-Royce plc Trent 768-60, Trent 772-60, and Trent 772B-60 Turbofan Engines","toc_doc":"Rolls-Royce plc","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Safety"],"type":"Rule","volume":68}