federal_register: E9-31381

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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
E9-31381 Damage Tolerance and Fatigue Evaluation of Composite Rotorcraft Structures Proposed Rule This proposal would revise airworthiness standards for type certification requirements of normal and transport category rotorcraft. The amendment would require evaluation of fatigue and residual static strength of composite rotorcraft structures using a damage tolerance evaluation, or a fatigue evaluation, if the applicant establishes that a damage tolerance evaluation is impractical. The amendment would address advances in composite structures technology and provide internationally harmonized standards. 2010-01-06 2010 1 https://www.federalregister.gov/documents/2010/01/06/E9-31381/damage-tolerance-and-fatigue-evaluation-of-composite-rotorcraft-structures https://www.govinfo.gov/content/pkg/FR-2010-01-06/pdf/E9-31381.pdf Transportation Department; Federal Aviation Administration 492,159 This proposal would revise airworthiness standards for type certification requirements of normal and transport category rotorcraft. The amendment would require evaluation of fatigue and residual static strength of composite rotorcraft structures using... 2120-AJ52

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