{"abstract":"This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 97-16-10, which was sent previously to owners of airplanes known to have RAPCO, Inc. (RAPCO) in- line pressure filters installed. This AD requires removing RAPCO filters with part numbers (P/N) RA-1J4-4, RA-1J4-6, and RA-1J4-7 that are from Lot Numbers 05597, 07797, and 12597. Recent operator reports and the manufacturer's report of several cracked filter housings on these RAPCO, Inc. in-line pressure filters prompted this AD. The actions specified by this AD are intended to prevent failure of the flight instruments during flight because of a failed in-line pressure filter, which could cause loss of control of the airplane.","action":"Final rule; request for comments.","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/1997/08/21/97-22147.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"39","title":14}],"citation":"62 FR 44406","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective September 18, 1997, to all persons except those to whom it was made immediately effective by priority letter AD 97-16-10, issued July 31, 1997, which contained the requirements of this amendment.","disposition_notes":null,"docket_ids":["Docket No. 97-CE-71-AD","Amendment 39-10103","AD 97-16-10"],"dockets":[],"document_number":"97-22147","effective_on":"1997-09-18","end_page":44408,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1997/08/21/97-22147/airworthiness-directives-rapco-inc-filter-part-numbers-ra--1j4-4-ra-1j4-6-and-ra-1j4-7-from-lot","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/97-22147?publication_date=1997-08-21","mods_url":"https://www.govinfo.gov/metadata/granule/FR-1997-08-21/97-22147/mods.xml","not_received_for_publication":null,"page_length":3,"page_views":{"count":43,"last_updated":"2026-08-26 14:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-1997-08-21/pdf/97-22147.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"1997-08-21","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1997/08/21/97-22147.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":44406,"subtype":null,"title":"Airworthiness Directives; RAPCO, Inc. Filter, Part Numbers RA- 1J4-4, RA-1J4-6, and RA-1J4-7 From Lot Numbers 05597, 07797, and 12597","toc_doc":null,"toc_subject":null,"topics":[],"type":"Rule","volume":62}