We are adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) model Spey 506-14A, Spey 555- 15, Spey 555-15H, Spey 555-15N, and Spey 555-15P turbofan engines. This AD requires reducing the maximum approved life limits for certain high- pressure compressor (HPC) stage 12 rotor disks. We are issuing this AD to correct the unsafe condition on these products.
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Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
We are adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) model Spey 506-14A, Spey 555- 15, Spey 555-15H, Spey 555-15N, and Spey 555-1...
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82 FR 24236
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“Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines,” thefederalregister.org (May 26, 2017), https://thefederalregister.org/documents/2017-10437/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbofan-engines.