federal_register: 2018-17405

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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
2018-17405 Airworthiness Directives; Rolls-Royce plc Turbofan Engines Proposed Rule We propose to supersede Airworthiness Directive (AD) 2017-03- 02, which applies to certain Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. AD 2017-03-02 requires initial and repetitive ultrasonic inspections (UIs) of the affected low- pressure (LP) compressor blades. Since we issued AD 2017-03-02, RR issued revised service information to reduce the inspection threshold for UIs of the affected blades. This proposed AD would retain the UIs in AD 2017-03-02 while reducing the inspection threshold. We are proposing this AD to address the unsafe condition on these products. 2018-08-14 2018 8 https://www.federalregister.gov/documents/2018/08/14/2018-17405/airworthiness-directives-rolls-royce-plc-turbofan-engines https://www.govinfo.gov/content/pkg/FR-2018-08-14/pdf/2018-17405.pdf Transportation Department; Federal Aviation Administration 492,159 We propose to supersede Airworthiness Directive (AD) 2017-03- 02, which applies to certain Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. AD 2017-03-02 requires initial and repetitive ultrasonic inspections (UIs) of the... 2120-AA64

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