Airworthiness directives › 2020-13-08
AD 2020-13-08 Airworthiness Directives; General Electric Company Turbofan Engines
Applicability*9
This AD applies to General Electric Company (GE) CF6-80E1A1, -80E1A2, -80E1A3, -80E1A4, and -80E1A4/B model turbofan engines.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 180 days after the effective date of this AD, replace TASK 05-21-02-200-001 in GE CF6-80E1 Engine Manual GEK99376 and the operator's existing continuous airworthiness maintenance program with TASK 05-21-02-200-001, dated September 15, 2015, from ESM 05-21-02, Life Limits 001 High Pressure Compressor HPC—Scheduled Maintenance Checks, of the GE CF6-80E1 Engine Manual GEK99376, Revision 48, dated September 15, 2019.
Unsafe condition
This AD was prompted by GE performing an updated lifing analysis on the high-pressure compressor (HPC) case. Based on this analysis, GE found new locations on the case that require fluorescent penetrant inspection (FPI), identified a new inspection interval for the existing FPI location, and added another part-numbered HPC case that requires inspection. The FAA is issuing this AD to prevent failure of the HPC case. The unsafe condition, if not addressed, could result in uncontained release of the HPC case, engine fire, and damage to the airplane.
Affected ADs
This AD replaces AD 2005-23-09, Amendment 39-14367 (70 FR 67901, November 9, 2005).
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