federal_register: 2013-04996

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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
2013-04996 Airworthiness Directives; Turbomeca S.A. Turboshaft Engines Rule We are superseding an existing airworthiness directive (AD) for all Turbomeca S.A. Makila 1A2 turboshaft engines. That AD currently requires replacement of certain serial number (S/N) N2 sensor harnesses. This AD requires replacement of the same S/N harnesses, and requires replacement of additional S/N N2 sensor harnesses. This AD was prompted by corrosion detected in affected N2 sensor harnesses. We are issuing this AD to prevent inadvertent activation of the 65% N1 back up mode, resulting in N2 speed fluctuation, significant power loss, and emergency landing of the helicopter. 2013-03-06 2013 3 https://www.federalregister.gov/documents/2013/03/06/2013-04996/airworthiness-directives-turbomeca-sa-turboshaft-engines https://www.govinfo.gov/content/pkg/FR-2013-03-06/pdf/2013-04996.pdf Transportation Department; Federal Aviation Administration 492,159 We are superseding an existing airworthiness directive (AD) for all Turbomeca S.A. Makila 1A2 turboshaft engines. That AD currently requires replacement of certain serial number (S/N) N2 sensor harnesses. This AD requires replacement of the same S/N...  

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