{"abstract":"The FAA is adopting a new airworthiness directive (AD) for Hartzell Propeller Inc. ( )HC-( )2Y( )-( ) series propellers with non- suffix serial number (SN) propeller hubs installed on Lycoming O-, IO-, LO-, and AEIO-360 series reciprocating engines. This AD requires initial and repetitive eddy current inspections (ECI) of the front cylinder half of the propeller hub for cracks and removing cracked hubs from service before further flight. In addition, this AD allows installation of an improved design propeller hub (suffix SN \"A\" or \"B\") as terminating action to the repetitive ECI. This AD results from a report of a propeller blade separating from a propeller hub. We are issuing this AD to prevent failure of the propeller hub causing blade separation and subsequent loss of airplane control.","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/2006/09/08/E6-14691.html","cfr_references":[{"chapter":null,"citation_url":null,"part":39,"title":14}],"citation":"71 FR 52994","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This AD becomes effective September 25, 2006. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulations as of September 25, 2006.","disposition_notes":null,"docket_ids":["Docket No. FAA-2006-25244","Directorate Identifier 2006-NE-25-AD","Amendment 39-14754","AD 2006-18-15"],"dockets":[],"document_number":"E6-14691","effective_on":"2006-09-25","end_page":52998,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2006/09/08/E6-14691.xml","html_url":"https://www.federalregister.gov/documents/2006/09/08/E6-14691/airworthiness-directives-hartzell-propeller-inc--hc--2y----series-propellers","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E6-14691?publication_date=2006-09-08","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2006-09-08/E6-14691/mods.xml","not_received_for_publication":null,"page_length":5,"page_views":{"count":741,"last_updated":"2026-10-23 20:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2006-09-08/pdf/E6-14691.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2006-09-08","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2006/09/08/E6-14691.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":"2011-11-12T19:59:16Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":52994,"subtype":null,"title":"Airworthiness Directives; Hartzell Propeller Inc. ( )HC-( )2Y( )-( ) Series Propellers","toc_doc":"Hartzell Propeller Inc.","toc_subject":"Airworthiness directives:","topics":["Air transportation","Aircraft","Aviation safety","Incorporation by reference","Safety"],"type":"Rule","volume":71}