[Correction] Engine — Operational Restrictions
- Published
- Effective
- Deadline
- Replaces
- 2018-0041-E
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must not fly aircraft with two affected engines installed beyond 3 flight cycles after 9 February 2018 and must cease ETOPS operations on aircraft with one affected engine within 1 flight cycle after that date. Incorporating this AD into the ETOPS Configuration, Maintenance, and Procedures documentation is an acceptable compliance method. Aircraft with Airbus modification 163917 and no affected engines are exempt from these restrictions.
Summary
EASA Airworthiness Directive 2018-0041R1 is a correction and revision to the original emergency AD addressing operational restrictions for certain Airbus A320-271N, A321-271N, and A321-272N aeroplanes equipped with specific International Aero Engines (IAE) PW1000G series engines. The directive targets engines with serial numbers P770450 to P770614 that are susceptible to high pressure compressor aft hub knife edge seal cracks, which can lead to in-flight shutdowns. It mandates operational limitations to mitigate the risk of dual engine failure and restricts Extended range Two-engine Operations (ETOPS) for affected engines.
What changed
This revision corrects typographical errors in the referenced service bulletin number and refines the definition of affected engines by removing the erroneously included PW1127G1-JM engine model. It also limits the population of affected engines by excluding those modified with the new IAE service bulletin that reinforces the high pressure compressor aft hub design. The AD updates operational restrictions accordingly.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk that could lead to dual engine in-flight shutdowns, posing a serious hazard during flight. Operators must ensure compliance to maintain airworthiness and avoid operational disruptions, especially concerning ETOPS flights. Maintenance and compliance teams need to track affected engine serial numbers and implement the required modifications or operational limitations promptly.
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