federal_register: E8-28109

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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
E8-28109 Airworthiness Directives; Erickson Air-Crane Incorporated (Erickson) Model S-64F Helicopters Proposed Rule This document proposes adopting a new airworthiness directive (AD) for Erickson Model S-64F helicopters. The AD would require inspections for cracking or working rivets in each left and right splice fitting (transition fitting), the pylon bulkhead assembly-- canted (bulkhead assembly), the pylon steel strap (strap), and the attaching rotary rudder boom and pylon structure. This proposal is prompted by several reports of cracking in the transition fittings, the bulkhead assembly, and pylon. The actions specified by the proposed AD are intended to detect cracking in the rotary rudder boom or pylon due to fatigue, and to prevent failure from static overload and subsequent loss of control of the helicopter. 2008-11-26 2008 11 https://www.federalregister.gov/documents/2008/11/26/E8-28109/airworthiness-directives-erickson-air-crane-incorporated-erickson-model-s-64f-helicopters https://www.govinfo.gov/content/pkg/FR-2008-11-26/pdf/E8-28109.pdf Transportation Department; Federal Aviation Administration 492,159 This document proposes adopting a new airworthiness directive (AD) for Erickson Model S-64F helicopters. The AD would require inspections for cracking or working rivets in each left and right splice fitting (transition fitting), the pylon bulkhead... 2120-AA64

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