{"abstract":"We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company (Cessna) Models 525, 525A, and 525B airplanes. This AD requires you to inspect the lower wing skin structure, forward wing spar, lower fuselage skin, fairings, and the external fairing frames for corrosion; repair any damage found; apply a corrosion inhibitive sealant to the fuselage fairings before reinstalling; and disable the cockpit mounted pilot relief tube. This AD results from leaking of the cockpit mounted pilot relief tube, which caused corrosion of the airplane structure. We are issuing this AD to detect and correct any damage from corrosion of the airplane structure. Corrosion of the airplane structure could cause structural degradation and lead to structural failure of the airplane with consequent loss of control.","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/2008/02/05/E8-1821.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"73 FR 6582","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective on March 11, 2008.","disposition_notes":null,"docket_ids":["Docket No. FAA-2007-28956","Directorate Identifier 2007-CE-068-AD","Amendment 39-15360","AD 2008-03-10"],"dockets":[],"document_number":"E8-1821","effective_on":"2008-03-11","end_page":6584,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2008/02/05/E8-1821.xml","html_url":"https://www.federalregister.gov/documents/2008/02/05/E8-1821/airworthiness-directives-cessna-aircraft-company-models-525-525a-and-525b-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E8-1821?publication_date=2008-02-05","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2008-02-05/E8-1821/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":276,"last_updated":"2026-08-25 06:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2008-02-05/pdf/E8-1821.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2008-02-05","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2008/02/05/E8-1821.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":{"comments_count":0,"agency_id":"FAA","document_id":"FAA-2007-28956-0003","checked_regulationsdotgov_at":"2024-11-09T03:00:39Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":6582,"subtype":null,"title":"Airworthiness Directives; Cessna Aircraft Company Models 525, 525A, and 525B Airplanes","toc_doc":"Cessna Aircraft Company Models 525, 525A, and 525B Airplanes","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":73}