{"abstract":"The FAA is adopting a new airworthiness directive (AD) for certain CFM International CFM56 Series turbofan engines. This AD requires replacing certain fuel filters manufactured under parts manufacturer approvals (PMA). This AD results from 12 reports of failed fuel filters. We are issuing this AD to prevent the loss of engine thrust that could result in loss of control during takeoff or landing.","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/2006/12/19/E6-21485.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"71 FR 75854","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective January 3, 2007.","disposition_notes":null,"docket_ids":["Docket No. FAA-2006-26502","Directorate Identifier 2006-NE-37-AD","Amendment 39-14859","AD 2006-26-01"],"dockets":[],"document_number":"E6-21485","effective_on":"2007-01-03","end_page":75855,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2006/12/19/E6-21485.xml","html_url":"https://www.federalregister.gov/documents/2006/12/19/E6-21485/airworthiness-directives-cfm-international-sa-cfm56-series-turbofan-engines","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E6-21485?publication_date=2006-12-19","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2006-12-19/E6-21485/mods.xml","not_received_for_publication":null,"page_length":2,"page_views":{"count":418,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2006-12-19/pdf/E6-21485.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2006-12-19","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2006/12/19/E6-21485.txt","regulation_id_number_info":{"2120-AA64":{"issue":"202410","html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202410&RIN=2120-AA64&operation=OPERATION_EXPORT_XML","priority_category":"Routine and Frequent"}},"regulation_id_numbers":["2120-AA64"],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-11-12T20:25:36Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":75854,"subtype":null,"title":"Airworthiness Directives; CFM International, S.A. CFM56 Series Turbofan Engines","toc_doc":"CFM International, S.A.","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Safety"],"type":"Rule","volume":71}