Airframe vibration led the control system on Aurora Flight Sciences’ Pegasus passenger air vehicle (PAV) to shut down the lift motors during landing, causing the electric vertical-takeoff-and-landing (eVTOL) prototype to crash, the preliminary report into the June 4 accident says. The unmanned PAV was on a development test flight when the crash occurred at Manassas Regional Airport in Virginia, says the U.S. National Transportation Safety Board (NTSB) report. The aircraft was ...

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