{"abstract":"The FAA is adopting a new airworthiness directive (AD) for certain Cessna Model 500, 501, 550, S550, 551, and 560 airplanes. This AD requires revising the airplane flight manual (AFM) to prohibit use of the wing fuel boost pumps for defueling under certain conditions; installing a placard; doing other specified investigative and corrective actions as necessary; and modifying the boost pumps. This AD also requires the subsequent removal of the AFM revision and placard. This AD results from a report of a chafed electrical wiring harness, which was arcing inside the fuel tank. We are issuing this AD to prevent potential fuel vapor ignition in a fuel tank, which could result in explosion and loss of the airplane.","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/2006/03/16/06-2408.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"71 FR 13526","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective April 20, 2006.","disposition_notes":null,"docket_ids":["Docket No. FAA-2005-20970","Directorate Identifier 2004-NM-53-AD","Amendment 39-14511","AD 2006-06-03"],"dockets":[],"document_number":"06-2408","effective_on":"2006-04-20","end_page":13529,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2006/03/16/06-2408.xml","html_url":"https://www.federalregister.gov/documents/2006/03/16/06-2408/airworthiness-directives-cessna-model-500-501-550-s550-551-and-560-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/06-2408?publication_date=2006-03-16","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2006-03-16/06-2408/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":580,"last_updated":"2026-08-24 18:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2006-03-16/pdf/06-2408.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2006-03-16","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2006/03/16/06-2408.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":"2011-11-12T18:48:17Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":13526,"subtype":null,"title":"Airworthiness Directives; Cessna Model 500, 501, 550, S550, 551, and 560 Airplanes","toc_doc":"Cessna","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":71}