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East Hartford jet-engine maker Pratt & Whitney saw its flagship product in the headlines this week after a midair explosion on a commercial flight last weekend.
The explosion shortly after the takeoff United Airlines Flight 328 from Denver on Saturday happened in an engine that showed signs of metal fatigue, the National Transportation Safety Board (NTSB) said at a briefing on Monday. The plane landed safely but shed debris in its wake.
The engine involved, a PW4000 model, was mounted on a 26-year-old Boeing 777. PW4000 engines are used on less than 10% of the global fleet of 777 widebody jets.
FAA chief Steve Dickson announced an Emergency Airworthiness Directive late Monday requiring “immediate or stepped-up inspections of Boeing 777 airplanes equipped with certain Pratt & Whitney PW4000 engines.” The hollow fan blades unique to PW4000 engines used by Boeing were singled out in the directive.
Airlines in Japan and the US have grounded dozens of Boeing 777 aircraft after the dramatic engine failure that United Airlines flight 328 experienced over Denver this weekend. The US FAA and Japan’s CAB took action to prevent planes with certain engines from flying.
Feb 22, 2021, 1:35 AM – Updated on Feb 22, 2021, 11:52 AM
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United Airlines Holding Inc. halted operations of 24 of its planes in the wake of the incident involving one of its fleet over the weekend. The U.S. Federal Aviation Administration ordered fan-blade checks on PW4077 engines made by Raytheon Technologies Corp.’s Pratt & Whitney division.
Airlines in Japan and South Korea also have 777 jets with the engine variant. Japan’s transport ministry grounded the planes early Monday, while Korean Air Lines Co. and Asiana Airlines Inc. said theirs would be idled.
The incident on United Airlines Flight 328 from Denver to Honolulu took place shortly after it took off on Saturday with 231 passengers and 10 crew members on board. The Boeing 777 landed safely back at Denver and nobody was injured by the falling debris. Footage of the burning engine was filmed by a passenger aboard the flight, while people on the ground captured scenes of the plane overhead and scat
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