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[i]The Probable Cause of this accident was the copilot's unlocking of SpaceShipTwo's feather locks at 0.92 Mach, approximately 14 seconds prior to the flight manual minimum speed of 1.4 Mach.[/i]
[i]The Feather Lock system design did not have an automatic mechanical inhibit to prevent premature movement of the feather system. Scaled Composites' aircrew procedures did not require a challenge/response protocol prior to moving the feather lock handle.[/i]
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