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Tue, Sep 02, 2014

AD: Bombardier, Inc. Airplanes

AD NUMBER: 2014-17-04

PRODUCT: Certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes.
ACTION: Final Rule

SUMMARY: This AD was prompted by reports that elevator power control unit (PCU) shear pins may fail prematurely.

This AD requires repetitive replacement of the elevator PCU shear pins. The FAA is issuing this AD to prevent premature elevator PCU shear pin failure. If all pins fail on one elevator, the elevator surface would become inoperative, which could reduce the controllability of the airplane and could result in a loss of redundancy for flutter prevention.

DATES: This AD becomes effective October 1, 2014.

FMI: AD 

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