{"abstract":"This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Dornier Model 328-300 series airplanes. This proposal would require replacement of the hydraulic line tube assemblies with improved tube assemblies and flexible hose assemblies. This action is necessary to prevent cracking of the hydraulic lines, which could result in loss of hydraulic pressure for certain braking systems on the airplane. This action is intended to address the identified unsafe condition.","action":"Notice of proposed rulemaking (NPRM).","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/2000/06/15/00-15191.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"65 FR 37500","comment_url":null,"comments_close_on":"2000-07-17","correction_of":null,"corrections":[],"dates":"Comments must be received by July 17, 2000.","disposition_notes":null,"docket_ids":["Docket No. 2000-NM-07-AD"],"dockets":[],"document_number":"00-15191","effective_on":null,"end_page":37501,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2000/06/15/00-15191.xml","html_url":"https://www.federalregister.gov/documents/2000/06/15/00-15191/airworthiness-directives-dornier-model-328-300-series-airplanes","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/00-15191?publication_date=2000-06-15","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2000-06-15/00-15191/mods.xml","not_received_for_publication":null,"page_length":2,"page_views":{"count":9,"last_updated":"2026-04-04 14:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2000-06-15/pdf/00-15191.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2000-06-15","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2000/06/15/00-15191.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":{},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":37500,"subtype":null,"title":"Airworthiness Directives; Dornier Model 328-300 Series Airplanes","toc_doc":"Dornier","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Safety"],"type":"Proposed Rule","volume":65}