A helicopter crash occurred during a lesson at an airport. The National Transportation Safety Board released video of the incident after completing an investigation. The crash happened on May 23 when the flight instructor adjusted the engine governor, causing the helicopter to lose control.

The helicopter moved backward and descended before striking the ground, then became airborne again before another impact. Fortunately, neither the instructor nor the student was seriously injured.

Further details and raw video of the crash are available from the source, showing the incident from a nearby security camera.