{"abstract":"We are adopting a new airworthiness directive (AD) for certain Boeing transport category airplanes. This AD requires replacing any insulation blanket constructed of polyethyleneteraphthalate (PET) film, ORCON Orcofilm[reg] AN-26 (hereafter \"AN-26\"), with a new insulation blanket. This AD results from reports of in-flight and ground fires on certain airplanes manufactured with insulation blankets covered with AN-26, which may contribute to the spread of a fire when ignition occurs from sources such as electrical arcing or sparking. We are issuing this AD to ensure that insulation blankets constructed of AN-26 are removed from the fuselage. Such insulation blankets could ignite and propagate a fire that is the result of electrical arcing or sparking.","action":"Final rule.","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/2008/11/10/E8-26352.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"73 FR 66497","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective December 15, 2008.","disposition_notes":null,"docket_ids":["Docket No. FAA-2005-20836","Directorate Identifier 2005-NM-028-AD","Amendment 39-15730","AD 2008-23-09"],"dockets":[],"document_number":"E8-26352","effective_on":"2008-12-15","end_page":66512,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2008/11/10/E8-26352.xml","html_url":"https://www.federalregister.gov/documents/2008/11/10/E8-26352/airworthiness-directives-boeing-model-727-200-and-727-200f-series-airplanes-737-200-737-200c-737-300","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E8-26352?publication_date=2008-11-10","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2008-11-10/E8-26352/mods.xml","not_received_for_publication":null,"page_length":16,"page_views":{"count":702,"last_updated":"2026-04-05 00:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2008-11-10/pdf/E8-26352.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2008-11-10","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2008/11/10/E8-26352.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":"2011-11-15T02:24:41Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":66497,"subtype":null,"title":"Airworthiness Directives; Boeing Model 727-200 and 727-200F Series Airplanes; 737-200, 737-200C, 737-300, and 737-400 Series Airplanes; 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR, and 747SP Series Airplanes; 757-200, 757-200CB, and 757-200PF Series Airplanes; and 767-200 and 767-300 Series Airplanes","toc_doc":"Boeing Model 727 200 and 727 200F Series Airplanes etc.","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":73}