See the link below. Strange and scary incident. The employee was not a licensed pilot, yet he took off and did barrel rolls and flips for an hour before crashing the plane. No one else was on the plane, and no one was killed on the ground.
https://www.cnn.com/2018/08/11/us/plane-crash-unauthorized-takeoff/index.html
https://www.cnn.com/2018/08/11/us/plane-crash-unauthorized-takeoff/index.html