EASA AD US-2019-06-02
[Correction] Engine Fuel - Fuel Nozzle - Replacement
Summary
Correction to Airworthiness Directive 2019-06-02 issued by the Federal Aviation Administration (FAA) addresses certain Pratt & Whitney Division PW4158 turbofan engines. This directive targets engines with specific serial numbers and requires replacement of fuel nozzles and fuel nozzle supply manifold assemblies due to high cycle fatigue cracks. It also mandates installation of new brackets and clamps on the fuel nozzle supply manifold assemblies to ensure continued airworthiness.
What Changed
This correction republished the original AD in its entirety to fix a typographical error in the applicability section where the engine designation was incorrectly combined. The AD introduces mandatory replacement of affected fuel nozzles and manifolds with approved parts and installation of new hardware to mitigate the unsafe condition. It also clarifies applicability by specifying affected engine serial numbers and revises compliance requirements for fuel nozzle part numbers.
Why It Matters
This AD is critical for aviation professionals as it addresses a safety risk from high cycle fatigue cracks in fuel nozzle supply manifolds that could lead to engine failure. Operators and maintenance organizations must comply to maintain engine reliability and regulatory compliance. The directive ensures that affected engines are equipped with parts that meet safety standards, reducing the risk of in-flight engine issues and potential operational disruptions.
What To Do
Operators of Pratt & Whitney PW4158 turbofan engines with the specified serial numbers must replace all 24 fuel nozzles and fuel nozzle supply manifold assemblies with FAA-approved parts. They must also install new brackets and clamps on the fuel nozzle supply manifold assemblies. Compliance with these actions is mandatory by April 30, 2019, the effective date of this AD.
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