Airworthiness directives › 2017-11-15
AD 2017-11-15 Airworthiness Directives; General Electric Company Turbofan Engines
Applicability*9
This AD applies to General Electric Company (GE) CF6-80C2L1F turbofan engines with a high-pressure turbine (HPT) spacer/impeller, part number (P/N) 1539M12P02, installed.
Compliance
Comply with this AD within the compliance times specified, unless already done. After the effective date of this AD, replace the HPT spacer/impeller, P/N 1539M12P02, before it exceeds 18,000 flight cycles since new.
Required actions
After the effective date of this AD, do not install an HPT spacer/impeller, P/N 1539M12P02, onto any engine, or return to service any engine with an HPT spacer/impeller, P/N 1539M12P02, installed, if the HPT spacer/impeller exceeds 18,000 flight cycles since new.
Unsafe condition
This AD was prompted by a reduction in the life limit of the affected engines, which is the result of a revised operating profile. We are issuing this AD to prevent failure of the HPT spacer/impeller, uncontained release of the HPT spacer/impeller, damage to the engine, and damage to the airplane.
Affected ADs
None.
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