Airworthiness Directive for Pratt & Whitney PW4164 and PW4168 Series Turbofan Engines

Summary

The FAA has issued an airworthiness directive requiring Pratt & Whitney PW4164 and PW4168 series turbofan engines to undergo regular inspections and repairs to prevent fan blade failure and separation, following a test incident where a fan blade was lost and caused structural damage to the engine inlet cowl.