Engine On United Flight Had Signs Of Fatigue: NTSB | News Radio 1000 KTOK
By Bill Galluccio Feb 23, 2021 NTSB Chairman Robert Sumwalt explained that the metal fatigue caused one of the fan blades on the plane's right engine to break off and hit another blade in the engine. Investigators have taken the fan blade to a lab where they will inspect it and try to determine how long it was damaged before it failed. Boeing announced that it was grounding all airplanes that were equipped with the Pratt & Whitney 4000 engine. That impacts 69 jets that are currently in service and 59 that are currently in storage. United Airlines is the only American carrier that has je...