FAA Proposes AD for Pratt & Whitney JT9D-7R4 Series Turbofan Engines

Summary

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.