{"abstract":"This final rule implements a mandate in the FAA Reauthorization Act of 2018 by requiring that certain airplanes used to conduct domestic, flag, or supplemental passenger-carrying operations have installed a physical secondary barrier that protects the flightdeck from unauthorized intrusion when the flightdeck door is opened.","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/2023/06/26/2023-13071.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"25","title":14},{"chapter":null,"citation_url":null,"part":"121","title":14}],"citation":"88 FR 41295","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective August 25, 2023.","disposition_notes":null,"docket_ids":["Docket No.: FAA-2022-0772","Amdt. 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