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In page 2005 in aviation:

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*17 June – The CarterCopter becomes the first rotorcraft to achieve mu-1 (μ=1), an equal ratio of airspeed to rotor tip speed, but it is badly damaged in a crash during a subsequent flight on the same day. *27 June – American businessman John T. Walton is killed when the home-built CGS Hawk Arrow ultralight aircraft he is piloting crashes near Jackson, Wyoming, just after takeoff from Jackson Hole Airport due to a maintenance error.[1]