{"abstract":"This action extends the comment period for a SNPRM titled \"Interior Parts and Components Fire Protection for Transport Category Airplanes\" that was published on August 17, 2023. In that document, the FAA provided additional information on its proposed elimination of a smoke emissions testing requirement. The FAA also changed its calculations related to the proposed rule's costs and benefits. The FAA is extending the comment period closing date to allow commenters additional time to analyze the proposed rule and prepare a response.","action":"Supplemental notice of proposed rulemaking (SNPRM); Extension of comment period.","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/2023/10/02/2023-21581.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"25","title":14},{"chapter":null,"citation_url":null,"part":"27","title":14},{"chapter":null,"citation_url":null,"part":"29","title":14},{"chapter":null,"citation_url":null,"part":"91","title":14},{"chapter":null,"citation_url":null,"part":"121","title":14},{"chapter":null,"citation_url":null,"part":"125","title":14},{"chapter":null,"citation_url":null,"part":"135","title":14}],"citation":"88 FR 67683","comment_url":null,"comments_close_on":"2023-11-30","correction_of":null,"corrections":[],"dates":"The comment period for the SNPRM published on August 17, 2023, at 88 FR 55941, is extended. Comments should be received on or before November 30, 2023.","disposition_notes":null,"docket_ids":["Docket No.: FAA-2019-0491","Notice No. 23-12"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supplemental Documents","document_id":"FAA-2019-0491-0088"},{"title":"U.S. DOT/FAA - Supplemental Documents","document_id":"FAA-2019-0491-0087"},{"title":"ARAC TAEIG Materials Flammability Working Group Continuation of Task Report","document_id":"FAA-2019-0491-0085"},{"title":"FAA Report No. DOT/FAA/TC-17/55, Aircraft Materials Fire Test Handbook, Revision 3, dated July 2019","document_id":"FAA-2019-0491-0028"},{"title":"FAA Report No. DOT/FAA/AR-00/12, Aircraft Materials Fire Test Handbook, dated April 2000","document_id":"FAA-2019-0491-0027"},{"title":"Proposed AC 25.856-2B, \"Fuselage Burnthrough Protection.\" To provide comments on this AC, go to http://www.faa.gov/aircraft/draft_docs/","document_id":"FAA-2019-0491-0026"},{"title":"Proposed AC 25.855-1X, \"Flammability Requirements of Cargo Liners for Transport Category Airplanes.\"","document_id":"FAA-2019-0491-0024"},{"title":"Proposed AC 25.853-5X, \"Flammability Requirements for Materials in Inaccessible Areas of Transport Category Airplanes.\"","document_id":"FAA-2019-0491-0022"},{"title":"Proposed AC 25.853-4X, \"Vertical Bunsen Burner Tests.\"","document_id":"FAA-2019-0491-0021"},{"title":"Proposed AC 25.853-3X, \"Flammability Testing Requirements for Commonly Constructed Parts, Construction Details, and Materials Used on Transport Category Airplanes.\"","document_id":"FAA-2019-0491-0020"}],"agency_name":"FAA","documents":[{"comment_count":36,"comment_start_date":"2023-10-02","updated_at":"2023-12-02T00:01:52.472-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2019-0491-0095","allow_late_comments":null,"id":"FAA-2019-0491-0095","comment_end_date":"2023-12-01","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":31,"id":"FAA-2019-0491","title":"Interior Parts and Components Fire Protection for Transport Category Airplanes"}],"document_number":"2023-21581","effective_on":"2023-08-17","end_page":67684,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2023/10/02/2023-21581.xml","html_url":"https://www.federalregister.gov/documents/2023/10/02/2023-21581/interior-parts-and-components-fire-protection-for-transport-category-airplanes-extension-of-comment","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2023-21581?publication_date=2023-10-02","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2023-10-02/2023-21581/mods.xml","not_received_for_publication":null,"page_length":2,"page_views":{"count":257,"last_updated":"2026-07-27 00:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2023-10-02/pdf/2023-21581.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2023-21581.pdf?1695991559","publication_date":"2023-10-02","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2023/10/02/2023-21581.txt","regulation_id_number_info":{"2120-AK34":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/2120-AK34/interior-parts-and-components-fire-protection-for-transport-category-airplanes","title":"Interior Parts and Components Fire Protection for Transport Category Airplanes","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&RIN=2120-AK34&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2120-AK34"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"U.S. DOT/FAA - 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