According to Reuters, United's Tuesday said it planned to resume the grounding of the Pratt & Whitney engine Boeing 777777-200 in the future. Local time February 20, United Airlines flight UA328 after takeoff shortly after the right engine failure, engine foreskin off. The plane then made a safe return and landed, causing no casualties. The US FAA ordered an immediate review of the Boeing 777's PW4000 engines on Monday and grounded Boeing 777 aircraft equipped with the engines. Immediately, Japan, South Korea, the United Kingdom stopped flying one after another. Robert Drewe Zumwalt, chairman of the National Transportation Safety Board, said: In light of the preliminary findings, the panel is studying whether the partial skin peeling accident on the Boeing 777 in Denver was caused by metal fatigue in the engine parts. Source: Civil Aviation Resource Network