EASA AD 2019-0071
Engine — Low Pressure Turbine Rear Support Seal Panel — Replacement
Summary
EASA Airworthiness Directive 2019-0071 is an airworthiness directive addressing Rolls-Royce Trent XWB-75, XWB-79, XWB-79B, and XWB-84 engines, commonly installed on Airbus A350 aircraft. The directive mandates the replacement of certain low pressure turbine rear support seal panel assemblies identified by specific serial numbers due to manufacturing defects. This action aims to maintain engine integrity and aircraft safety.
What Changed
This new airworthiness directive introduces a mandatory replacement of affected low pressure turbine rear support seal panel assemblies during qualified shop visits. It identifies specific parts with insufficient resistance welding fusion that could lead to air leakage and potential engine failure. The directive also prohibits reinstallation of removed affected parts.
Why It Matters
This directive is critical for aviation professionals as it addresses a potential unsafe condition that could cause premature turbine disc failure and uncontained engine debris release. Compliance ensures continued airworthiness and safety of affected engines and aircraft. Operators and maintenance organizations must incorporate these requirements into their maintenance planning to avoid operational disruptions and regulatory non-compliance.
What To Do
Operators must replace affected low pressure turbine rear support seal panels with serviceable parts during the next qualified shop visit after 11 April 2019 or during the current shop visit if already in progress. Reinstallation of removed affected parts is prohibited from the effective date. Compliance with Rolls-Royce Alert NMSB TRENT XWB 72-AJ994 instructions is required.
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