{"abstract":"The FAA is adopting a new airworthiness directive (AD) for all Raytheon (Beech) Model 400, 400A, and 400T series airplanes; and Raytheon (Mitsubishi) Model MU-300 airplanes. This AD requires revising the airplane flight manual to modify the Operating Limitations, Abnormal Procedures, and Normal Procedures, as applicable, for flight in icing conditions. This AD results from multiple reports of high- altitude, dual-engine flameouts on airplanes operating in certain meteorological conditions. We are issuing this AD to advise the flightcrew that the buildup of ice on certain internal areas of the engine could result in a dual-engine flameout and what action they must take to avoid this hazard.","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/2006/10/10/E6-16552.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"71 FR 59363","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective October 25, 2006.","disposition_notes":null,"docket_ids":["Docket No. FAA-2006-26004","Directorate Identifier 2006-NM-212-AD","Amendment 39-14785","AD 2006-21-02"],"dockets":[],"document_number":"E6-16552","effective_on":"2006-10-25","end_page":59366,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2006/10/10/E6-16552.xml","html_url":"https://www.federalregister.gov/documents/2006/10/10/E6-16552/airworthiness-directives-raytheon-beech-model-400-400a-and-400t-series-airplanes-and-raytheon","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E6-16552?publication_date=2006-10-10","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2006-10-10/E6-16552/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":160,"last_updated":"2026-10-25 00:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2006-10-10/pdf/E6-16552.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2006-10-10","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2006/10/10/E6-16552.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":"2011-11-12T20:08:20Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":59363,"subtype":null,"title":"Airworthiness Directives; Raytheon (Beech) Model 400, 400A, and 400T Series Airplanes; and Raytheon (Mitsubishi) Model MU-300 Airplanes","toc_doc":"Raytheon","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":71}