Engine - High Pressure Compressor Case - Inspection
- Published
- Effective
- Deadline
- Replaces
- 2005-23-09
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must update TASK 05-21-02-200-001 in the GE CF6-80E1 Engine Manual GEK99376 and their continuous airworthiness maintenance program within 180 days of the AD's effective date. They must perform fluorescent penetrant inspections on the specified HPC case locations according to the revised intervals and include the newly added HPC case part number in their inspection routines.
Summary
The Federal Aviation Administration Airworthiness Directive 2020-13-08 is a final rule addressing General Electric Company CF6-80E1A1, -80E1A2, -80E1A3, -80E1A4, and -80E1A4/B model turbofan engines. It mandates updated inspections of the high-pressure compressor (HPC) cases, specifically parts 1509M97G07 and 2083M69G03, to enhance safety and prevent engine failures. This directive updates the Airworthiness Limitations Section of the GE Engine Manual GEK99376 and the operator's continuous airworthiness maintenance program.
What changed
This AD supersedes AD 2005-23-09 by requiring fluorescent penetrant inspections (FPI) of additional locations on the HPC cases and revises inspection intervals for existing locations. It also adds a new HPC case part number to the inspection requirements. The update is based on an updated lifing analysis performed by GE.
Why it matters
This directive is critical for aviation professionals because it addresses an unsafe condition that could lead to HPC case failure, uncontained engine release, engine fire, and potential damage to the aircraft. Operators and maintenance organizations must comply to ensure continued airworthiness and safety of affected engines. The updated inspections help prevent catastrophic engine events and maintain regulatory compliance.
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