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AD: CFM International S.A. Turbofan Engines

AD NUMBER: 2016-02-04

PRODUCT: Certain CFM International S.A. (CFM) CFM56-5B series turbofan engines.

ACTION: Final Rule

SUMMARY: This AD was prompted by a corrected lifing analysis by the engine manufacturer that shows the need to identify an initial and repetitive inspection threshold for certain part number (P/N) turbine rear frames (TRFs).

This AD requires initial and repetitive inspections of certain P/N TRFs on the low-pressure turbine (LPT) frame assembly.

The FAA is issuing this AD to prevent failure of the TRF on the LPT frame assembly, which could lead to engine separation, damage to the engine, and damage to the airplane.

DATES: This AD is effective March 1, 2016.

FMI: AD

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