{"abstract":"This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-11 series airplanes, that requires an inspection of the upper avionics circuit breaker panel at the main observer's station to detect damage of the wires and to verify the correct routing of the wire bundles; corrective actions, if necessary; and installation of a new clamp, spacer, and sta-straps. This action is necessary to prevent chafing in the upper avionics circuit breaker panel of the main observer's station, which could result in arcing and consequent smoke and/or fire in the cockpit. This action is intended to address the identified unsafe condition.","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/2001/08/22/01-20936.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"66 FR 44041","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective September 26, 2001.","disposition_notes":null,"docket_ids":["Docket No. 2000-NM-189-AD","Amendment 39-12400","AD 2001-17-09"],"dockets":[],"document_number":"01-20936","effective_on":"2001-09-26","end_page":44042,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2001/08/22/01-20936.xml","html_url":"https://www.federalregister.gov/documents/2001/08/22/01-20936/airworthiness-directives-mcdonnell-douglas-model-md-11-series-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/01-20936?publication_date=2001-08-22","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2001-08-22/01-20936/mods.xml","not_received_for_publication":null,"page_length":2,"page_views":{"count":14,"last_updated":"2026-04-04 16:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2001-08-22/pdf/01-20936.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2001-08-22","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2001/08/22/01-20936.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":"2011-11-12T05:17:34Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":44041,"subtype":null,"title":"Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes","toc_doc":"McDonnell Douglas","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":66}