{"abstract":"The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. TPE331-10 and TPE331-11 series turboprop engines. This AD requires removing certain first stage turbine disks from service. This AD results from a report of an uncontained failure of a first stage turbine disk that had a metallurgical defect. We are issuing this AD to prevent uncontained failure of the first stage turbine disk and 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/2009/08/17/E9-19633.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"74 FR 41327","comment_url":null,"comments_close_on":"2009-10-16","correction_of":null,"corrections":[],"dates":"This AD becomes effective September 1, 2009. We must receive any comments on this AD by October 16, 2009.","disposition_notes":null,"docket_ids":["Docket No. FAA-2009-0555","Directorate Identifier 2009-NE-18-AD","Amendment 39-15996","AD 2009-17-05"],"dockets":[],"document_number":"E9-19633","effective_on":"2009-09-01","end_page":41328,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2009/08/17/E9-19633.xml","html_url":"https://www.federalregister.gov/documents/2009/08/17/E9-19633/airworthiness-directives-honeywell-international-inc-tpe331-10-and-tpe331-11-series-turboprop","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E9-19633?publication_date=2009-08-17","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2009-08-17/E9-19633/mods.xml","not_received_for_publication":null,"page_length":2,"page_views":{"count":62,"last_updated":"2026-08-26 14:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2009-08-17/pdf/E9-19633.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2009-08-17","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2009/08/17/E9-19633.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":"2009-09-01T14:24:04Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":41327,"subtype":null,"title":"Airworthiness Directives; Honeywell International Inc. TPE331-10 and TPE331-11 Series Turboprop Engines","toc_doc":"Honeywell International Inc. TPE331 10 and TPE331 11 Series Turboprop Engines","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Safety"],"type":"Rule","volume":74}