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Pratt & Whitney Reduces Life Limits For A220, E190/E195-E2 Engines

Jun 12,2019

Pratt & Whitney has reduced life limits on PW1500G and PW1900G geared turbofan (GTF) high-pressure compressor (HPC) front hubs after excessive corrosion was discovered during a routine overhaul, and the FAA plans to mandate the change.

The US agency, in a notice of proposed rulemaking (NPRM) published May 31, said Pratt discovered corrosion on a front hub ¡°during a routine engine overhaul.¡± It was found beneath anti-corrosion coating. The issue ¡°reduces the low-cycle fatigue capability and can occur even during engine downtime,¡± the agency added.

Pratt informed operators of the issue and its decision to reduce the hub life-limits in several service bulletins issued in April and May. The NPRM refers to the bulletins for details on the new life limits.

Pratt did not immediately respond to a request for comment.

The PW1500G and PW1900G engines power the Airbus A220 and Embraer E190/E195-E2 families, respectively. FAA said the directive affects 18 engines installed on US-registered aircraft.

Atlanta-based Delta Air Lines is the only US operator of either aircraft type¡ªit operates A220s.

The life-limit reduction is likely to be adopted by other regulators around the world.

Under this situation, ¡°The 8th China Aerospace Propulsion Technology Forum¡° is scheduled to be held on September 26th-27th, 2019 in Xi¡¯an China. There are 30 aero engine design and manufactures organization in China, The CAPTF 2019 will cover all related industry buyers. And we¡¯d invite 200 delegates whom are: engineering director, manufacturer manager, machine shop leader to share about the situation about the China Aerospace Propulsion now and also we¡¯d invite the global company to share the new and advanced technology and projects.


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