EASA AD 2019-0071: Engine — Low Pressure Turbine Rear Support Seal Panel — Replacement | RegNotify

Airworthiness DirectiveEASA AD 2019-0071

Engine — Low Pressure Turbine Rear Support Seal Panel — Replacement

Published: Mar 28, 2019
Effective: Apr 11, 2019
Deadline: Apr 11, 2019

AI-generated summary of the official EASA document. Verify against the PDF before acting.

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.

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.

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