Safety Rules & Regs

Airworthiness Directives; Pratt & Whitney (PW) JT9D-7 Series Turbofan Engines. Final rule. SUMMARY: This AD requires initial and repetitive borescope inspections of the 2nd stage high-pressure turbine (HPT) rotor and stator assembly. This AD results from an uncontained failure of a 2nd stage HPT rotor...

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