Collision with terrain involving Lockheed Martin Stalker XE VTOL UAS, Mount Disappointment, Victoria, on 24 October 2016

On 24 October 2016, the operator (pilot) of a Lockheed Martin Stalker eXtended Endurance (XE) unmanned aerial system, configured in vertical take-off and landing (VTOL) mode, prepared to conduct a demonstration flight at Mount Disappointment, Victoria. The previous day, the operator had loaded the latest autopilot software onto the aircraft's main autopilot. One mission goal ["]