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Thu, Aug 25, 2016

AD: Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines

AD NUMBER: 2016-17-01

PRODUCT: All Rolls-Royce Deutschland Ltd & Co KG (RRD) Tay 650-15 and Tay 651-54 turbofan engines.

ACTION: Final Rule

SUMMARY: The FAA is superseding airworthiness directive (AD) 2006-18-14 for the engines listed above.

AD 2006-18-14 required calculating and re-establishing the cyclic life of stage 1 high-pressure turbine (HPT) disks, part number (P/N) JR32013 and P/N JR33838, and stage 1 low-pressure turbine (LPT) disk, P/N JR32318A.

In addition, this AD requires re-calculating the cyclic life, and would impose a reduced cyclic life of stage 1 HPT disk, P/N JR32013. This AD was prompted by RRD review of the cyclic life limit of parts affected by AD 2006-18-14 and the RRD conclusion that the stage 1 HPT disk, P/N JR32013, requires further cyclic life limit reduction.

The FAA is issuing this AD to prevent failure of stage 1 HPT disks, P/N JR32013 and P/N JR33838, and stage 1 LPT disk, P/N JR32318A, uncontained disk release and damage to the airplane.

DATES: This AD is effective September 27, 2016.

FMI: AD

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