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Sat, May 31, 2008

AD: Rolls-Royce

AD NUMBER: 2008-11-16
MANUFACTURER: Rolls Royce
SUBJECT: Airworthiness Directive 2008-11-16
SUMMARY:
The FAA is superseding an existing airworthiness directive (AD) for RR RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61 turbofan engines.

That AD currently requires removing certain serial-numbered intermediate pressure compressor (IPC) drums, part number (P/N) FK30102. This AD requires removing those same IPC drums, and requires a new reduced life limit for all other IPC drums, P/N FK30102.

This AD results from an RR engineering assessment that it is necessary to reduce the cyclic lives of the other drums with the same P/N.

We are issuing this AD to prevent uncontained loss of IPC stage 1 blades, whichcould result in damage to the airplane.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/

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