federal_register: 98-34706

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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
98-34706 Airworthiness Directives; Pratt & Whitney JT8D and JT3D Series Turbofan Engines Rule This amendment adopts a new airworthiness directive (AD) that is applicable to Pratt & Whitney (PW) JT8D and JT3D series turbofan engines. This action requires operators to remove and replace with serviceable parts, certain stage 7 through stage 15 high-pressure compressor (HPC) disks identified by part number and serial number. This amendment is prompted by a report of an uncontained failure of a stage 8 HPC disk during a takeoff roll that resulted in damage to the airplane. The actions specified in this AD are intended to prevent the failure of a high-pressure compressor disk due to Cadmium embrittlement, resulting in uncontained engine failure and damage to the airplane. 1998-12-31 1998 12 https://www.federalregister.gov/documents/1998/12/31/98-34706/airworthiness-directives-pratt-and-whitney-jt8d-and-jt3d-series-turbofan-engines https://www.govinfo.gov/content/pkg/FR-1998-12-31/pdf/98-34706.pdf Transportation Department; Federal Aviation Administration 492,159 This amendment adopts a new airworthiness directive (AD) that is applicable to Pratt & Whitney (PW) JT8D and JT3D series turbofan engines. This action requires operators to remove and replace with serviceable parts, certain stage 7 through stage 15...  

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