[Final Rule] Engine - High-Pressure Turbine Interstage Seal - Removal from Service
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must remove from service the Interstage Seal, part number 2505M72P01, with specified serial numbers from GE90-115B engines within 25 flight cycles from December 6, 2019. They should refer to GE Alert Service Bulletin GE90-100 S/B 72-A0826 dated October 23, 2019, for removal procedures. Stakeholders may submit comments on the directive by January 6, 2020.
Summary
[Final Rule] Engine - High-Pressure Turbine Interstage Seal - Removal from Service is a Federal Aviation Administration (FAA) airworthiness directive addressing certain General Electric Company GE90-115B model turbofan engines. It mandates the removal from service of the Interstage Seal, part number 2505M72P01, installed on specific engine serial numbers due to a recent uncontained high-pressure turbine failure event. This directive aims to prevent potential engine and aircraft damage caused by high-energy debris release.
What changed
This new airworthiness directive requires operators to remove the Interstage Seal with part number 2505M72P01 from affected GE90-115B engines within 25 flight cycles. It formalizes the previously issued Emergency AD 2019-21-51 and applies to engines with specified serial numbers. The directive introduces mandatory compliance actions to mitigate the risk of uncontained turbine failure.
Why it matters
This directive is critical for aviation professionals as it addresses a severe safety risk involving uncontained turbine failure that can cause significant damage to the aircraft and jeopardize flight safety. Operators and maintenance organizations must ensure timely compliance to avoid potential catastrophic engine failures. Compliance teams need to track affected engines and part serial numbers to maintain regulatory adherence and operational safety.
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