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Sat, Apr 11, 2015

AD: Rolls-Royce plc Turbofan Engines

AD NUMBER: 2015-07-01

PRODUCT: Certain Rolls-Royce plc (RR) RB211-524 turbofan engines with certain part number (P/N) low-pressure turbine (LPT) stage 3 turbine blades installed.

ACTION: Final Rule

SUMMARY: This AD requires implementation of a life limit for certain P/N LPT stage 3 turbine blades and replacement of affected blades that reach or exceed the life limit. This AD was prompted by reports of LPT stage 3 turbine blade failures, release of blades, and subsequent in-flight shutdowns.

The FAA is issuing this AD to prevent failure of LPT stage 3 turbine blades and subsequent release of blade debris, which could lead to failure of one or more engines, loss of thrust control, and damage to the airplane.

DATES: This AD becomes effective May 8, 2015

FMI: AD

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