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Thu, Dec 03, 2009

AD: GE

AD NUMBER: 2007-11-18R1

MANUFACTURER: General Electric Company CF6-50C Series Turbofan Engines
SUBJECT: Airworthiness Directive 2007-11-18R1

SUMMARY: The FAA is revising an existing airworthiness directive (AD) for General Electric Company (GE) CF6-50C series turbofan engines. That AD currently requires reworking certain forward fan stator cases and installing a fan module secondary containment shield. This AD requires the same actions but eliminates a certain service bulletin from the compliance method. This AD results from a review that shows that only one of the service bulletins referenced in the original AD is applicable as a compliance method. We are issuing this AD revision to eliminate a certain service bulletin from the compliance method and to prevent uncontained fan blade failures, which can result in separation of airplane hydraulic lines, damage to critical airplane systems, and possible loss of airplane control.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/56CD8247A817CCB28625767B0059337D?OpenDocument

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