{"abstract":"The Federal Aviation Administration amends the airworthiness standards applicable to transport category airplanes certificated for flight in icing conditions. The rule requires a means to ensure timely activation of the airframe ice protection system. This rule is the result of information gathered from a review of icing accidents and incidents, and will improve the level of safety for new airplane designs for operations in icing conditions.","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/2009/08/03/E9-18483.html","cfr_references":[{"chapter":null,"citation_url":null,"part":25,"title":14}],"citation":"74 FR 38328","comment_url":"https://www.regulations.gov/commenton/FAA-2007-27654-0022","comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This amendment becomes effective September 2, 2009.","disposition_notes":null,"docket_ids":["Docket No.: FAA-2007-27654","Amendment No. 25-129"],"dockets":[{"supporting_documents":[{"title":"PER REQUEST OF FAA FAA-2007-27654-6 WAS COMBINED WITH FAA-2007-27654-5","document_id":"FAA-2007-27654-0006"}],"agency_name":"FAA","documents":[{"comment_count":0,"comment_start_date":"2009-08-03","updated_at":"2024-11-08T13:52:00.907-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2007-27654-0022","allow_late_comments":true,"id":"FAA-2007-27654-0022","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2007-27654","title":"Activation of Ice Protection - Request for Comment"}],"document_number":"E9-18483","effective_on":"2009-09-02","end_page":38340,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2009/08/03/E9-18483.xml","html_url":"https://www.federalregister.gov/documents/2009/08/03/E9-18483/activation-of-ice-protection","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E9-18483?publication_date=2009-08-03","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2009-08-03/E9-18483/mods.xml","not_received_for_publication":null,"page_length":13,"page_views":{"count":405,"last_updated":"2026-10-23 00:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2009-08-03/pdf/E9-18483.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2009-08-03","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2009/08/03/E9-18483.txt","regulation_id_number_info":{"2120-AI90":{"issue":"200904","html_url":"https://www.federalregister.gov/regulations/2120-AI90/activation-of-ice-protection","title":"Activation of Ice Protection","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=200904&RIN=2120-AI90&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2120-AI90"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"PER REQUEST OF FAA FAA-2007-27654-6 WAS COMBINED WITH FAA-2007-27654-5","document_id":"FAA-2007-27654-0006"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2120-AI90/activation-of-ice-protection","title":"Activation of Ice Protection"},"comments_count":0,"agency_id":"FAA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2007-27654","supporting_documents_count":1,"docket_id":"FAA-2007-27654","document_id":"FAA-2007-27654-0022","regulation_id_number":"2120-AI90","title":"Activation of Ice Protection - Request for Comment","checked_regulationsdotgov_at":"2024-11-08T21:55:17Z"},"regulations_dot_gov_url":"https://www.regulations.gov/commenton/FAA-2007-27654-0022","significant":true,"signing_date":null,"start_page":38328,"subtype":null,"title":"Activation of Ice Protection","toc_doc":"Activation of Ice Protection","toc_subject":null,"topics":["Aircraft","Aviation safety","Reporting and recordkeeping requirements","Safety","Transportation"],"type":"Rule","volume":74}