ANA and Japan Airlines will remove high-pressure turbine blades from 88 PW4000s powering their respective 777 fleets. JAL will spend ¥4.3 billion ($36.8 million) to replace HPTs in 46 engines while ANA will replace blades in 42 engines for ¥5.2 billion, Mainichi Daily News reported. Pratt & Whitney has been working with operators for some time to address the problem with the blades, which are subject to corrosion. Increased inspection and gradual replacement has been the ...

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