{"abstract":"The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-8, 737-9, and 737-8200 (737 MAX) airplanes; and certain Model 737-800 and 737-900ER series airplanes. This AD was prompted by the determination that the aft cargo compartment fire suppression capability is reduced if the airplane is dispatched or released with failed electronic flow control of air conditioning packs, as is currently allowed by these airplane models' master minimum equipment lists (MMELs). This AD prohibits the carriage of cargo in the aft cargo compartment when the airplane is dispatched or released with failed electronic flow control of air conditioning packs. The FAA is issuing this AD to address the unsafe condition on these products.","action":"Final rule; request for comments.","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/2021/08/09/2021-16972.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"86 FR 43404","comment_url":"https://www.regulations.gov/commenton/FAA-2021-0614-0001","comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective August 9, 2021.","disposition_notes":null,"docket_ids":["Docket No. FAA-2021-0614","Project Identifier AD-2021-00831-T","Amendment 39-21677","AD 2021-16-15"],"dockets":[{"supporting_documents":[{"title":"Supporting AD Document","document_id":"FAA-2021-0614-0002"}],"agency_name":"FAA","documents":[{"comment_count":5,"comment_start_date":"2021-08-09","updated_at":"2024-11-06T20:42:51.361-05:00","comment_url":"https://www.regulations.gov/commenton/FAA-2021-0614-0001","allow_late_comments":true,"id":"FAA-2021-0614-0001","comment_end_date":"2021-09-24","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"FAA-2021-0614","title":"AD-2021-00831-T; The Boeing Company Airplanes"}],"document_number":"2021-16972","effective_on":"2021-08-09","end_page":43406,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2021/08/09/2021-16972.xml","html_url":"https://www.federalregister.gov/documents/2021/08/09/2021-16972/airworthiness-directives-the-boeing-company-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2021-16972?publication_date=2021-08-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2021-08-09/2021-16972/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":2219,"last_updated":"2026-08-26 06:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2021-08-09/pdf/2021-16972.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2021-16972.pdf?1628176518","publication_date":"2021-08-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2021/08/09/2021-16972.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":{"supporting_documents":[{"title":"Supporting AD Document","document_id":"FAA-2021-0614-0002"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives"},"comments_count":5,"agency_id":"FAA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2021-0614","supporting_documents_count":1,"docket_id":"FAA-2021-0614","document_id":"FAA-2021-0614-0001","regulation_id_number":"2120-AA64","title":"AD-2021-00831-T; The Boeing Company Airplanes","checked_regulationsdotgov_at":"2024-11-07T23:00:19Z"},"regulations_dot_gov_url":"https://www.regulations.gov/commenton/FAA-2021-0614-0001","significant":false,"signing_date":null,"start_page":43404,"subtype":null,"title":"Airworthiness Directives; The Boeing Company Airplanes","toc_doc":"The Boeing Company Airplanes","toc_subject":"Airworthiness Directives:\n","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":86}