federal_register: 2019-02453

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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
2019-02453 Airworthiness Directives; Pratt & Whitney Division (PW) Turbofan Engines Rule We are adopting a new airworthiness directive (AD) for certain Pratt & Whitney Division (PW) PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines. This AD was prompted by an in-flight failure of a 1st-stage low-pressure compressor (LPC) blade. This AD requires initial and repetitive thermal acoustic imaging (TAI) inspections for cracks in certain 1st-stage LPC blades and removal of those blades that fail inspection. We are issuing this AD to address the unsafe condition on these products. 2019-02-15 2019 2 https://www.federalregister.gov/documents/2019/02/15/2019-02453/airworthiness-directives-pratt-and-whitney-division-pw-turbofan-engines https://www.govinfo.gov/content/pkg/FR-2019-02-15/pdf/2019-02453.pdf Transportation Department; Federal Aviation Administration 492,159 We are adopting a new airworthiness directive (AD) for certain Pratt & Whitney Division (PW) PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines. This AD was prompted by an in-flight failure of a 1st-stage low-pressure... 2120-AA64

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