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비즈니스 · 2011. 7. 14.1 분 읽기
Airworthiness Directives; Pratt & Whitney Division (PW) PW4000 Series Turbofan Engines
로컬 자동 번역 · 원본 출처 언어
요약
We propose to adopt a new airworthiness directive (AD) for certain PW4000 turbofan engines. This proposed AD was prompted by an updated low-cycle fatigue (LCF) life analysis performed by Pratt & Whitney. This proposed AD would require removing certain part number (P/N) high-pressure turbine (HPT) stage 1 and HPT stage 2 airseals and HPT stage 1 airseal rings before their published life limit, and establishes a new lower life limit for these parts. We are proposing this AD to correct the unsafe condition on these products.
원본 출처 언어: Federal Register — Transportation Department원문 발표 열기 →