February 12, 2018

Pratt seeks to fix PurePower woes

East Hartford aeroparts manufacturer Pratt & Whitney Co. says it will present aviation regulators with a proposed second fix to a troublesome seal on some of its PurePower passenger-jet engines.

Pratt declared its next steps Monday following recent disclosures that its PW1100G-JM engines aboard some of India's IndiGo Air jetliners had failed before or during flight.

Working with European airframe builder Airbus, whose 320neo airliners have PurePower engines, Pratt said its evaluation of the impact of findings last week of a knife edge seal on the affected engines continues.

It said it implemented an engineering change in mid-2017 meant to improve the seal's durability. However, four modified engines failed in late January and early February.

Pratt said 43 engines are installed aboard 32 aircraft, with 21 of them incorporating the engine fix. Another 55 engines are sitting on Airbus' assembly line awaiting the fix, Pratt said.

Pratt said it will present its proposed resolution to aviation overseers later this week.

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