{"abstract":"We are adopting a new airworthiness directive (AD) for certain Learjet Model 55, 55B, and 55C airplanes. This AD requires inspecting the installation of the forward light assembly in the aft lavatory to determine the location of the terminal connector; inspecting for damage of the light assembly terminals, wires, and oxygen lines; inspecting to determine if the cable nipple is installed over the light assembly terminal; and doing corrective actions if necessary. This AD also requires installing a clamp to the forward side of the frame to maintain a positive distance between the light assembly and oxygen line. This AD results from a report of a cabin fire in the left-hand upper cabin fuselage above the aft cabin window at frame 23. We are issuing this AD to detect and correct improper installation of the lavatory light assembly, which could result in contact between the electrical terminals of the light assembly and an adjacent oxygen supply line, and consequent short circuit or fire 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/2009/02/18/E9-3023.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"74 FR 7554","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective March 5, 2009.","disposition_notes":null,"docket_ids":["Docket No. FAA-2009-0054","Directorate Identifier 2008-NM-222-AD","Amendment 39-15802","AD 2009-03-01"],"dockets":[],"document_number":"E9-3023","effective_on":"2009-03-05","end_page":7557,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2009/02/18/E9-3023.xml","html_url":"https://www.federalregister.gov/documents/2009/02/18/E9-3023/airworthiness-directives-learjet-model-55-55b-and-55c-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E9-3023?publication_date=2009-02-18","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2009-02-18/E9-3023/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":77,"last_updated":"2026-10-24 04:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2009-02-18/pdf/E9-3023.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2009-02-18","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2009/02/18/E9-3023.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":"2011-11-15T13:34:03Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":7554,"subtype":null,"title":"Airworthiness Directives; Learjet Model 55, 55B, and 55C Airplanes","toc_doc":"Learjet Model 55, 55B, and 55C Airplanes","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":74}