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Thu, Jul 03, 2014

AD: Pratt & Whitney Canada Corp. Turboprop Engines

AD NUMBER: 2014-11-05

PRODUCT: Certain Pratt & Whitney Canada Corp. (P&WC) turboprop engines.
ACTION: Final Rule

SUMMARY: This AD requires installing a reinforcement liner to the power turbine (PT) containment ring and, for certain PT containment rings, adding scallops.

This AD was prompted by in-service events involving the perforation of engine cases as a result of the liberation of PT blades and the fracture/displacement of the PT containment ring.

The FAA is issuing this AD to prevent uncontained engine failure and damage to the airplane.

DATES: This AD becomes effective August 5, 2014.

FMI: AD

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