{"abstract":"We are superseding Airworthiness Directive (AD) 2008-08-04 for certain Airbus Model A318, A319, A320, and A321 series airplanes. AD 2008-08-04 required repetitive inspections for cracking in the forward lug of the support rib 5 fitting of the left and right main landing gear (MLG), and repair or replacement of any cracked MLG fitting if necessary. AD 2008-08-04 also required modification of the rib bushings of the left and right MLG, which ended the repetitive inspections. This new AD requires, for airplanes on which certain modifications or repairs have been done, repetitive inspections for cracks of the forward lug of each left-hand and right-hand MLG support rib 5 fitting, and repair if necessary; and adds Model A318 series airplanes to the applicability. Replacement of an MLG support rib 5 fitting terminates the repetitive inspection requirements for the MLG support rib 5 fitting at that position. This AD was prompted by reports of cracks found in the forward lug of the MLG support rib 5 fitting. We are issuing this AD to prevent cracking in the forward lug of the MLG, which could result in failure of the lug and consequent collapse of the MLG during takeoff or landing.","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/2014/03/28/2014-04954.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"79 FR 17416","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective May 2, 2014.","disposition_notes":null,"docket_ids":["Docket No. FAA-2011-1253","Directorate Identifier 2011-NM-079-AD","Amendment 39-17723","AD 2013-26-14"],"dockets":[],"document_number":"2014-04954","effective_on":"2014-05-02","end_page":17422,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2014/03/28/2014-04954.xml","html_url":"https://www.federalregister.gov/documents/2014/03/28/2014-04954/airworthiness-directives-airbus-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2014-04954?publication_date=2014-03-28","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2014-03-28/2014-04954/mods.xml","not_received_for_publication":null,"page_length":7,"page_views":{"count":686,"last_updated":"2026-09-20 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2014-03-28/pdf/2014-04954.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2014-04954.pdf?1395924528","publication_date":"2014-03-28","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2014/03/28/2014-04954.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 - Additional Information","document_id":"FAA-2011-1253-0017"},{"title":"U.S. DOT/FAA - Airworthiness Directive Grid","document_id":"FAA-2011-1253-0016"},{"title":"US Airways - See Attachments","document_id":"FAA-2011-1253-0012"},{"title":"U.S. DOT/FAA - See Attachments","document_id":"FAA-2011-1253-0009"},{"title":"U.S. DOT/FAA  - See Attachment","document_id":"FAA-2011-1253-0003"},{"title":"U.S. DOT.FAA - See Attachments","document_id":"FAA-2011-1253-0002"}],"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-2011-1253","supporting_documents_count":6,"docket_id":"FAA-2011-1253","regulation_id_number":"2120-AA64","title":"2011-NM-079-AD Airbus Model A319, A320, and A321 airplanes","checked_regulationsdotgov_at":"2014-04-17T08:08:05Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":17416,"subtype":null,"title":"Airworthiness Directives; Airbus Airplanes","toc_doc":"Airbus Airplanes","toc_subject":"Airworthiness Directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":79}