The powerlines were not marked with high visibility devices, nor were they required to be so marked by the relevant Australian Standard. This reduced the likelihood of a pilot detecting the position of the wires.
The visibility of the poles has been enhanced and has been favourably reported by visiting pilots.
The ALA owner has marked the powerline by installing two additional poles near the powerlines that are topped with high-visibility windsocks. The poles have a hinged base so they can be lowered for servicing. In addition, the owner of the ALA has re-written and issued updated versions of the ALA diagram and ‘hold harmless agreements’. The depiction of the powerline on the new ALA diagram is more accurate and highlighted in red.
The ATSB is satisfied that the action taken by the owner of the ALA adequately addresses this safety issue.
