federal_register: 2015-26949

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document_number title type abstract publication_date pub_year pub_month html_url pdf_url agency_names agency_ids excerpts regulation_id_numbers
2015-26949 Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters Rule We are publishing a new airworthiness directive (AD) for Sikorsky Aircraft Corporation Model S-76A, S-76B, S-76C, and S-76D helicopters, which was sent previously to all known U.S. owners and operators of these helicopters. This AD requires inspecting the main rotor (M/R) and tail rotor (T/R) pushrod assemblies and the jamnuts, and applying slippage marks across the pushrod tubes and jamnuts. This AD is prompted by an accident of a Sikorsky Aircraft Corporation Model S-76C helicopter. During preliminary investigation, a failed pushrod assembly was identified. These actions are intended to prevent loss of M/R or T/R flight control and subsequent loss of control of the helicopter. 2015-10-26 2015 10 https://www.federalregister.gov/documents/2015/10/26/2015-26949/airworthiness-directives-sikorsky-aircraft-corporation-helicopters https://www.govinfo.gov/content/pkg/FR-2015-10-26/pdf/2015-26949.pdf Transportation Department; Federal Aviation Administration 492,159 We are publishing a new airworthiness directive (AD) for Sikorsky Aircraft Corporation Model S-76A, S-76B, S-76C, and S-76D helicopters, which was sent previously to all known U.S. owners and operators of these helicopters. This AD requires inspecting... 2120-AA64

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