{"abstract":"We are revising a notice of proposed rulemaking (NPRM) for certain Meggitt (Troy), Inc. (previously known as Stewart Warner South Wind Corporation and as Stewart Warner South Wind Division) Model Series (to include all the variants) 921, 930, 937, 940, 944, 945, 977, 978, 979, 8240, 8253, 8259, and 8472 combustion heaters that proposed to supersede airworthiness directive (AD) 81-09-09. The NPRM proposed to retain most actions from AD 81-09-09, add a calendar time to the repetitive inspections, add more detailed actions to the inspections, and add a pressure decay test. The NPRM was prompted by an airplane accident and reports we received of the heater malfunctioning. This action revises the NPRM by adding combustion heater models series to the applicability and modifying the compliance times. We are proposing this SNPRM to correct the unsafe condition on these products. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.","action":"Supplemental notice of proposed rulemaking (SNPRM); reopening 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/2016/11/03/2016-26428.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"81 FR 76532","comment_url":null,"comments_close_on":"2016-12-19","correction_of":null,"corrections":[],"dates":"The comment period for the NPRM published in the Federal Register on August 20, 2014 (79 FR 49249) is reopened. We must receive comments on this SNPRM by December 19, 2016.","disposition_notes":null,"docket_ids":["Docket No. FAA-2014-0603","Directorate Identifier 2013-CE-026-AD"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/FAA - Supporting AD Documents","document_id":"FAA-2014-0603-0021"},{"title":"Initial Regulatory Flexibility Analysis (IRFA)","document_id":"FAA-2014-0603-0015"},{"title":"2013-CE-026-AD Revised Regulatory Evaluation","document_id":"FAA-2014-0603-0014"},{"title":"U.S. DOT/FAA - Various Supplemental AD Documents","document_id":"FAA-2014-0603-0006"}],"agency_name":"FAA","documents":[{"comment_count":4,"comment_start_date":"2016-11-03","updated_at":"2023-02-28T19:28:49.152-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2014-0603-0013","allow_late_comments":null,"id":"FAA-2014-0603-0013","comment_end_date":"2016-12-20","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":4,"id":"FAA-2014-0603","title":"2013-CE-026-AD"}],"document_number":"2016-26428","effective_on":null,"end_page":76540,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2016/11/03/2016-26428.xml","html_url":"https://www.federalregister.gov/documents/2016/11/03/2016-26428/airworthiness-directives-meggitt-troy-inc-combustion-heaters","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2016-26428?publication_date=2016-11-03","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2016-11-03/2016-26428/mods.xml","not_received_for_publication":null,"page_length":9,"page_views":{"count":550,"last_updated":"2026-08-26 12:15:06 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2016-11-03/pdf/2016-26428.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2016-26428.pdf?1478090726","publication_date":"2016-11-03","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2016/11/03/2016-26428.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":{"supporting_documents":[{"title":"U.S. DOT/FAA - Supporting AD Documents","document_id":"FAA-2014-0603-0021"},{"title":"Initial Regulatory Flexibility Analysis (IRFA)","document_id":"FAA-2014-0603-0015"},{"title":"2013-CE-026-AD Revised Regulatory Evaluation","document_id":"FAA-2014-0603-0014"},{"title":"U.S. DOT/FAA - Various Supplemental AD Documents","document_id":"FAA-2014-0603-0006"}],"comments_count":4,"agency_id":"FAA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2014-0603","supporting_documents_count":4,"docket_id":"FAA-2014-0603","document_id":"FAA-2014-0603-0013","regulation_id_number":null,"title":"2013-CE-026-AD","checked_regulationsdotgov_at":"2023-03-01T00:28:48Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":76532,"subtype":null,"title":"Airworthiness Directives; Meggitt (Troy), Inc. Combustion Heaters","toc_doc":"Meggitt (Troy), Inc. Combustion Heaters","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Proposed Rule","volume":81}