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Dozens of 777s grounded after United engine failure

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Boeing has suspended operations on more than 120 777 aircraft powered by Pratt & Whitney 4000-112 engines after an incident on board a United Airlines flight.

https://twitter.com/ChadSchnell/status/1363259614133776386

On Saturday, February 20th, United flight F328 from Denver to Honolulu had to return to Denver International Airport for an emergency landing following a dramatic engine failure. Alongside flames from inside the engine, the inlet and cowling of the Pratt & Whitney PW4077 on the right wing also detached, scattering debris around the Broomfield area to the west of the airport. None of the 229 passengers or 10 crewmembers were injured.

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According to a preliminary investigation from the US’s National Transportation Safety Board (NTSB), most of the damage was confined to the number two engine, with minor damage sustained to the aircraft itself. Two engine fan blades were fractured, one near the root and an adjacent blade in about mid-span. A portion of one blade was imbedded in the containment ring, while the remainder of the fan blades exhibited damage to their tips and leading edges.

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