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Sun, Dec 25, 2005

AD: General Electric

AD NUMBER: 2005-26-06
MANUFACTURER: General Electric
SUBJECT: Airworthiness Directive 2005-26-06
SUMMARY:
The FAA is adopting a new airworthiness directive (AD) for General Electric Company (GE) CF6-45A, CF6-50A, CF6-50C, and CF6-50E series turbofan engines. This AD requires removing from service pre-GE Service Bulletin (SB) No. CF6-50S/B 72-1268 configuration low pressure turbine (LPT) stage 2 interstage seal assemblies and stage 3 interstage seal assemblies. This AD also requires installing new or reworked configuration stage 2 interstage seal assemblies and stage 3 interstage seal assemblies. This AD results from reports of fan mid shaft separation, leading to separation of the LPT stage 1 disk, disk overspeed, and uncontained engine failure. We are issuing this AD to prevent uncontained engine failure and damage to the airplane.

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

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