Regulation & law · 09/11/2007
FAA Proposes AD for Pratt & Whitney JT9D-7R4 Series Turbofan Engines
The Federal Aviation Administration (FAA) is proposing to supersede an existing airworthiness directive for Pratt & Whitney JT9D-7R4 series turbofan engines, requiring a visual and fluorescent penetrant inspection of all affected air seal assemblies to prevent uncontained failure and engine shutdown.
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