Pneumatic – Trent XWB Engine Bleed Air Supply System T-Duct – Replacement
Superseded. Comply with 2025-0259, which replaces this document.
- Published
- Effective
- Replaces
- 2023-0189
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must identify if their Airbus A350-941 or A350-1041 aircraft have affected EBAS T-Duct parts installed and replace them with serviceable parts within the specified flight cycle limits or within 20 months if flight cycles cannot be determined. Inspections and repairs per the Eaton vendor service bulletin can defer replacement if properly documented. Installation of affected parts is only allowed if they are serviceable, and affected parts installed after 7 November 2023 must be replaced accordingly.
Summary
EASA Airworthiness Directive 2023-0189R1 is a revision addressing the Airbus A350-941 and A350-1041 aeroplanes equipped with Trent XWB engines. It focuses on the replacement and inspection of the Engine Bleed Air System (EBAS) T-Duct, part number RR03-11011-001, due to a manufacturing quality issue that could lead to cracking and potential engine failure. The directive mandates compliance with Airbus and Rolls-Royce service bulletins to ensure continued airworthiness.
What changed
This revision updates the definition of affected EBAS T-Duct parts by incorporating an inspection and repair solution introduced through the Eaton vendor service bulletin. This update allows certain inspected and repaired parts to be considered serviceable, thus exempting them from mandatory replacement. The compliance times and installation criteria remain aligned with the original directive but reflect these new repair options.
Why it matters
This directive is critical for operators and maintenance organizations to prevent potential uncontained engine failures or uncontrolled engine fires caused by defective EBAS T-Ducts. Compliance ensures aircraft safety and regulatory adherence, minimizing operational disruptions and avoiding possible loss of control incidents. It also provides clear guidance on part eligibility and replacement timelines, aiding maintenance planning and inventory management.
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