federal_register: E8-4944

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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
E8-4944 Airworthiness Directives; Boeing Model 757-200, -200PF, and -200CB Series Airplanes Rule We are adopting a new airworthiness directive (AD) for certain Boeing Model 757-200, -200PF, and -200CB series airplanes. This AD requires doing an ultrasound inspection for disbonded tear straps not mechanically fastened to the skin, and related investigative and corrective actions, if necessary. This AD results from reports indicating that bonded skin panels may not have been correctly anodized in phosphoric acid before the tear strap doubler was bonded to the skin. We are issuing this AD to detect and correct a weak bond between the skin and tear strap. Such disbonding could reduce the ability of the skin to resist cracks and could adversely affect the structural integrity of the airplane. 2008-03-13 2008 3 https://www.federalregister.gov/documents/2008/03/13/E8-4944/airworthiness-directives-boeing-model-757-200--200pf-and--200cb-series-airplanes https://www.govinfo.gov/content/pkg/FR-2008-03-13/pdf/E8-4944.pdf Transportation Department; Federal Aviation Administration 492,159 We are adopting a new airworthiness directive (AD) for certain Boeing Model 757-200, -200PF, and -200CB series airplanes. This AD requires doing an ultrasound inspection for disbonded tear straps not mechanically fastened to the skin, and related... 2120-AA64

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