この記事の翻訳を準備しています。それまでの間、英語の原文を表示します。
ビジネス · 2011/7/131 分で読めます
Airworthiness Directives; Pratt & Whitney Corp. (PW) JT9D-7R4H1 Turbofan Engines
ローカル自動翻訳 · 情報源の原言語
概要
We propose to adopt a new airworthiness directive (AD) for all PW JT9D-7R4H1 turbofan engines. This proposed AD would require removing certain high-pressure compressor (HPC) shafts before their certified life limits, and establishes a new, lower life-limit for these parts. This proposed AD was prompted by reports of cracks in five HPC shafts. We are proposing this AD to correct the unsafe condition on these products.
情報源の原言語: Federal Register — Transportation Department原文の発表を開く →