What happened
While operating near the Coonabarabran Aerodrome, the pilot of VH-REU conducted a low-altitude pass over a field adjacent to the airfield. During this maneuver, the aircraft type (unspecified model) struck powerlines and subsequently collided with the terrain. Witnesses on the ground observed the aircraft flying straight and level at approximately 70 feet, appearing to fly directly over a tractor driver. At the moment of impact, the aircraft was at an altitude of roughly 15–25 feet above the ground. There was no operational necessity for the flight to be at such a low height, and the flight path did not align with any approach to the available runways.
The investigation
Investigators examined the wreckage and found no evidence of mechanical failure, engine issues, or defects in the flight controls or structure. Previous flights involving autopilot adjustments had also been completed without incident. The investigation focused on the pilot's intent and the visibility of the hazards. While the pilot was aware of the powerline locations from a discussion the previous day, the lines were not required to have visual markers due to their height and position. This lack of markers made the lines extremely difficult to detect from the air. Furthermore, the pilot was not utilizing the aircraft's sash-type upper torso restraint, a factor that can increase the risk of serious or fatal injury during an impact.
Findings
- The pilot lacked a low-level rating, which provides essential training in hazard identification and specialized techniques for flying below 500 feet.
- The powerlines were not fitted with visual markers, making them difficult to see.
- The pilot's flight path was an intentional low-level overflight of a tractor and driver with no operational justification.
- The absence of the upper torso restraint increased the potential for severe injury during the collision.