Inspections on CFM International CFM56-7B engines since an April 17 accident tied to a fractured fan blade have not revealed a fleet-wide safety issue, and investigators have determined that the engine failure caused a large piece of fan cowl to strike the fuselage and break a window.  NTSB investigators revealed in a May 3 investigative update that the engine failure was contained, with two pieces of the fractured fan blade, in position No. 13, found between the other 23 ...

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