EASA Regulations for Pratt & Whitney PW4000

4 airworthiness directives and regulations affecting Pratt & Whitney PW4000.

EASA SIB SAIB-2025-06

High Pressure Turbines

The FAA Special Airworthiness Information Bulletin SAIB: 2025-06 provides information regarding a failure mode in the high pressure turbine (HPT) of Pratt & Whitney Division Model PW4050, PW4052, PW4056, PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4152, PW4156, PW4156A, PW4158, PW4160, PW4460, PW4462, and PW4650 engines. This bulletin alerts operators and maintainers about the potential for coating spalling on the 2nd stage HPT blade outer air seal leading to component failures but does not mandate any regulatory action. It references previous service bulletins and airworthiness directives related to similar issues.

Jul 23, 2025

Safety Information BulletinMaintenanceSafety MgmtPratt & Whitney PW4000

EASA AD US-2022-12-12

Engine - Low Pressure Turbine Stage 5 Air Seal - Replacement

The document titled "Engine - Low Pressure Turbine Stage 5 Air Seal - Replacement" is a Federal Aviation Administration (FAA) Airworthiness Directive (AD) addressing certain Pratt & Whitney PW4062 model turbofan engines. It mandates the removal and replacement of the low-pressure turbine (LPT) stage 5 air seal due to a manufacturing defect that reduces its low-cycle fatigue life. This AD aims to prevent potential engine damage and uncontained part release that could compromise aircraft safety.

Jun 20, 2022

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney PW4000

EASA AD US-2019-06-02

[Correction] Engine Fuel - Fuel Nozzle - Replacement

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.

Apr 24, 2019

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney PW4000

EASA AD US-2018-13-02

Engine - 4th Stage Low Pressure Turbine Air Seals - Replacement

Federal Aviation Administration Airworthiness Directive 2018-13-02 is a final rule addressing Pratt & Whitney Division turbofan engines models PW4052, PW4056, PW4060, PW4062, PW4062A, PW4152, PW4156A, PW4158, PW4460, and PW4462, including suffixes -1C, -1E, -3, -3A, and -3B. It mandates the removal from service of certain 4th stage low-pressure turbine (LPT) air seals, specifically part number 50N346, due to the discovery of multiple cracks. The directive aims to prevent engine damage and potential airplane hazards caused by air seal failure.

Jun 18, 2018

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney PW4000