{"abstract":"We are superseding an existing airworthiness directive (AD) for certain Model 777-200, -300, and -300ER series airplanes. That AD currently requires installing Teflon sleeving under the clamps of certain wire bundles routed along the fuel tank boundary structure, and cap sealing certain penetrating fasteners of the main and center fuel tanks. This AD expands the applicability in the existing AD. This AD was prompted by fuel system reviews conducted by the manufacturer, which determined that electrical arcing on the fuel tank boundary structure or inside the fuel tanks could result in a fire or explosion. We are issuing this AD to correct the unsafe condition on these products.","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/2011/12/16/2011-31893.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"76 FR 78138","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective January 3, 2012.","disposition_notes":null,"docket_ids":["Docket No. FAA-2011-1317","Directorate Identifier 2011-NM-193-AD","Amendment 39-16893","AD 2011-26-03"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Acknowledgement Letter/Receipt","document_id":"FAA-2011-1317-0006"},{"title":"U.S. DOT/FAA - See Attachment","document_id":"FAA-2011-1317-0003"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2011-1317-0002"}],"agency_name":"FAA","documents":[{"comment_count":2,"comment_start_date":"2011-12-16","updated_at":"2023-03-01T14:16:01.667-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2011-1317-0001","allow_late_comments":null,"id":"FAA-2011-1317-0001","comment_end_date":"2012-01-31","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":3,"id":"FAA-2011-1317","title":"2011-NM-193-AD\r\nThe Boeing Company Model 777-200, -200LR, -300, and ‑300ER Series Airplanes"}],"document_number":"2011-31893","effective_on":"2012-01-03","end_page":78141,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2011/12/16/2011-31893.xml","html_url":"https://www.federalregister.gov/documents/2011/12/16/2011-31893/airworthiness-directives-the-boeing-company-model-777-200--200lr--300-and--300er-series-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2011-31893?publication_date=2011-12-16","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2011-12-16/2011-31893/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":875,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2011-12-16/pdf/2011-31893.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2011-31893.pdf?1323957040","publication_date":"2011-12-16","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2011/12/16/2011-31893.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":{"supporting_documents":[{"title":"U.S. DOT/FAA - Acknowledgement Letter/Receipt","document_id":"FAA-2011-1317-0006"},{"title":"U.S. DOT/FAA - See Attachment","document_id":"FAA-2011-1317-0003"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2011-1317-0002"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives"},"comments_count":2,"agency_id":"FAA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2011-1317","supporting_documents_count":3,"docket_id":"FAA-2011-1317","document_id":"FAA-2011-1317-0001","regulation_id_number":"2120-AA64","title":"2011-NM-193-AD\r\nThe Boeing Company Model 777-200, -200LR, -300, and ‑300ER Series Airplanes","checked_regulationsdotgov_at":"2023-03-01T19:16:00Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":78138,"subtype":null,"title":"Airworthiness Directives; The Boeing Company Model 777-200, -200LR, -300, and -300ER Series Airplanes","toc_doc":"Boeing Co. Model 777200, 200LR, 300, and 300ER Series Airplanes","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":76}