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Fri, Aug 13, 2004

AD: Rolls Royce

AD NUMBER: 2004-15-02
MANUFACTURER: Rolls Royce (CORRECTION)
SUBJECT: Airworthiness Directive 2004-15-02
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce plc (RR) models RB211 Trent 875-17, Trent 877-17, Trent 884-17, Trent 884B -17, Trent 892-17, Trent 892B-17, and Trent 895-17 turbofan engines with low pressure (LP) compressor fan blades part number (P/N) FW18548, installed. This AD requires LP compressor fan blade replacement with new or previously reworked blades, or rework of the existing LP compressor fan blades. This AD results from a number of new production LP compressor fan blades found with surfaces formed outside of design intent. Findings included sharp edges, burrs, and damage present in the area at the top of the shear key slots. We are issuing this AD to prevent possible multiple uncontained LP compressor fan blade failure, due to cracking in the blade root caused by increased stresses in the shear key slots.

FMI: http://www.avantext.com/DailyADIndex.ASP?AD=20041502

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