Engine - Diffuser Case Assembly - Removal / Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must remove and replace the affected diffuser case assemblies at the next engine shop visit after May 29, 2020, or before accumulating 10,000 cycles since new, whichever occurs first. Maintenance personnel should refer to the guidance provided in IAE Non-Modification Service Bulletin V2500-ENG-72-0707 for replacement procedures. Stakeholders should monitor affected engine serial numbers and coordinate with the FAA and manufacturer for compliance.
Summary
The FAA Airworthiness Directive 2020-09-03 is a final rule addressing International Aero Engines AG V2500 series turbofan engines with specific diffuser case assembly serial numbers. It mandates the removal and replacement of affected diffuser case assemblies to prevent potential failure. This directive applies to multiple V2500 engine models including V2500-A1, V2522-A5, V2524-A5, V2525-D5, and others.
What changed
This new airworthiness directive introduces mandatory removal and replacement of certain diffuser case assemblies identified by serial numbers due to a manufacturing quality issue. It requires affected engines to have the diffuser case assembly replaced at the next engine shop visit or before reaching 10,000 cycles since new. The directive does not impose an installation prohibition but mandates removal of all affected parts.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk involving potential uncontained failure of the diffuser case assembly, which could lead to engine and aircraft damage. Operators and maintenance organizations must ensure compliance to maintain airworthiness and avoid operational disruptions. Compliance teams need to track affected engines and parts to meet regulatory requirements and ensure continued safe operation.
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