{"abstract":"This document proposes to revise Airworthiness Directive (AD) 97-01-01, which currently requires repetitively inspecting the main gear sidebrace studs for cracks on The New Piper Aircraft, Inc. (Piper) Models PA-24, PA-28R, PA-30, PA-32R, PA-34, and PA-39 series airplanes, and replacing any main gear sidebrace stud found cracked. The Federal Aviation Administration (FAA) has approved certain alternative methods of compliance (AMOC) for AD 97-01-01, and has determined that these AMOC's should be incorporated into the AD. The proposed AD would retain all the actions of AD 97-01-01, and would incorporate certain AMOC's as a way of accomplishing the actions specified in AD 97-01-01. The actions specified by the proposed AD are intended to prevent a main landing gear collapse caused by main gear sidebrace stud cracks, which could result in loss of control of the airplane during landing operations.","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/1998/05/22/98-13656.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"63 FR 28294","comment_url":null,"comments_close_on":"1998-07-23","correction_of":null,"corrections":[],"dates":"Comments must be received on or before July 23, 1998.","disposition_notes":null,"docket_ids":["Docket No. 96-CE-09-AD"],"dockets":[],"document_number":"98-13656","effective_on":null,"end_page":28299,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1998/05/22/98-13656/airworthiness-directives-the-new-piper-aircraft-inc-pa-24-pa--28r-pa-30-pa-32r-pa-34-and-pa-39","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/98-13656?publication_date=1998-05-22","mods_url":"https://www.govinfo.gov/metadata/granule/FR-1998-05-22/98-13656/mods.xml","not_received_for_publication":null,"page_length":6,"page_views":{"count":27,"last_updated":"2026-08-24 22:15:11 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-1998-05-22/pdf/98-13656.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"1998-05-22","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1998/05/22/98-13656.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":{"checked_regulationsdotgov_at":"2011-09-21T04:58:46Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":28294,"subtype":null,"title":"Airworthiness Directives; The New Piper Aircraft, Inc. PA-24, PA- 28R, PA-30, PA-32R, PA-34, and PA-39 Series Airplanes","toc_doc":null,"toc_subject":null,"topics":[],"type":"Proposed Rule","volume":63}