EASA Regulations for Pratt & Whitney PW4090

4 airworthiness directives and regulatory documents affecting Pratt & Whitney PW4090.

EASA AD US-2023-22-02

Engine - Combustion Section Outer Diffuser Case - Inspection / Removal

Airworthiness Directive 2023-22-02 is a final rule issued by the FAA addressing Pratt & Whitney Division Model PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 engines. The directive focuses on inspecting and replacing the combustion section outer diffuser case (ODC) to prevent cracks that could lead to engine and aircraft damage. It mandates fluorescent penetrant inspections and replacement of certain ODC parts with modified versions to reduce stress-related cracking.

Nov 22, 2023

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney PW4070Pratt & Whitney PW4080Pratt & Whitney PW4090

EASA AD US-2023-19-02

Low Pressure Compressor Fan Hub - Inspection / Replacement

Airworthiness Directive 2023-19-02 is a final rule issued by the FAA addressing Pratt & Whitney Division Model PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 engines. It mandates repetitive eddy current inspections of the low-pressure compressor (LPC) fan hub assembly to detect cracks and requires removal from service if cracks are found. This directive aims to prevent LPC fan hub failure that could lead to uncontained debris release and damage to the engine and aircraft.

Oct 13, 2023

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney PW4070Pratt & Whitney PW4080Pratt & Whitney PW4090

EASA AD US-2022-07-13

Engine Oil - Air/Oil Heat Exchanger - Inspection / Replacement

The Federal Aviation Administration's Airworthiness Directive 2022-07-13 addresses Pratt & Whitney Division turbofan engines models PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3. This directive mandates inspection and possible replacement of the air/oil heat exchanger due to corrosion-related leaks that have caused in-flight shutdowns, particularly affecting Boeing 777 aircraft powered by these engines.

Apr 20, 2022

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney PW4070Pratt & Whitney PW4080Pratt & Whitney PW4090Boeing 777

EASA AD US-2022-06-09

Engine - 1st-Stage Low-Pressure Compressor Blades - Inspection / Removal

Airworthiness Directive 2022-06-09 is a final rule issued by the Federal Aviation Administration addressing certain Pratt & Whitney PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines. It mandates inspections and removal of 1st-stage low-pressure compressor blades to prevent in-flight failures and engine fires. This directive updates previous ADs by requiring improved ultrasonic and thermal acoustic image inspections on critical blade locations.

Mar 14, 2022

Airworthiness DirectiveMaintenanceSafety MgmtPratt & Whitney PW4070Pratt & Whitney PW4080Pratt & Whitney PW4090