{"abstract":"We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes. This AD was prompted by reports of cracking of the forward bulkhead web, web stiffeners, attachment angles, and thermal anti-ice (TAI) spray ring assemblies of the engine air intake cowl. This AD requires replacing the forward bulkhead assembly, TAI spray ring assembly, and attachment fittings of the air intake cowl. We are issuing this AD to prevent the failure of air intake cowl components due to cracking, which could result in the air intake cowl separating from the engine and striking critical airplane control surfaces that could result in a loss of airplane control; severe engine damage and loss of thrust; or large parts striking a person or property on the ground.","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/2014/05/27/2014-09835.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"79 FR 30008","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD is effective July 1, 2014.","disposition_notes":null,"docket_ids":["Docket No. FAA-2012-1103","Directorate Identifier 2012-NM-131-AD","Amendment 39-17842","AD 2014-09-07"],"dockets":[],"document_number":"2014-09835","effective_on":"2014-07-01","end_page":30015,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2014/05/27/2014-09835.xml","html_url":"https://www.federalregister.gov/documents/2014/05/27/2014-09835/airworthiness-directives-the-boeing-company-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2014-09835?publication_date=2014-05-27","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2014-05-27/2014-09835/mods.xml","not_received_for_publication":null,"page_length":8,"page_views":{"count":841,"last_updated":"2026-04-04 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2014-05-27/pdf/2014-09835.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2014-09835.pdf?1400850519","publication_date":"2014-05-27","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2014/05/27/2014-09835.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 - Various Supplemental AD Documents","document_id":"FAA-2012-1103-0013"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2012-1103-0002"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2120-AA64/airworthiness-directives","title":"Airworthiness Directives"},"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=FAA-2012-1103","supporting_documents_count":2,"docket_id":"FAA-2012-1103","regulation_id_number":"2120-AA64","title":"2012-NM-131-AD The Boeing Company Model 757?200, -200PF, ?200CB, and ?300 series airplanes","checked_regulationsdotgov_at":"2014-06-16T06:00:12Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":30008,"subtype":null,"title":"Airworthiness Directives; The Boeing Company Airplanes","toc_doc":"The Boeing Company Airplanes","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":79}