The NTSB says the fatal inflight breakup of SpaceShipTwo on Oct. 31, 2014, was caused by the co-pilot’s earlier-than-planned unlocking of the feathering tail mechanism, but it faults the vehicle manufacturer, Scaled Composites, for inadequate training and procedures, and it suggests a design modification could have mitigated human error.  The report, which was reviewed by the NTSB July 28, confirms the board’s preliminary findings made within days of the loss of the SS2 ...


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