federal_register: 2013-25460

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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
2013-25460 Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines Proposed Rule We propose to adopt a new airworthiness directive (AD) for all Pratt & Whitney Canada Corp. (P&WC) PT6A-114 and PT6A-114A turboprop engines. This proposed AD was prompted by several incidents of compressor turbine (CT) blade failure, including two fatalities, resulting in power loss and in-flight shutdown (IFSD) of the engine. This proposed AD would require initial and repetitive borescope inspections (BSIs) of CT blades, and the removal from service of blades that fail inspection. We are proposing this AD to prevent failure of CT blades, which could lead to damage to the engine or to the airplane. 2013-10-29 2013 10 https://www.federalregister.gov/documents/2013/10/29/2013-25460/airworthiness-directives-pratt-and-whitney-canada-corp-turboprop-engines https://www.govinfo.gov/content/pkg/FR-2013-10-29/pdf/2013-25460.pdf Transportation Department; Federal Aviation Administration 492,159 We propose to adopt a new airworthiness directive (AD) for all Pratt & Whitney Canada Corp. (P&WC) PT6A-114 and PT6A-114A turboprop engines. This proposed AD was prompted by several incidents of compressor turbine (CT) blade failure, including two... 2120-AA64

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