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The pilot had been airborne for approximately 15 minutes, carrying out aerial spraying of a newly planted crop. The paddock being sprayed was bounded on its northern and western boundaries by a fence approximately 1.2 metres high. Directly above, and running parallel with the western fence, was a three strand power line, the lower cables of which were approximately five metres above ground level. The pilot had flown above the power lines on each previous spray run, crossing the paddock from east to west. After completing a procedure turn the aircraft was lined up for the clean-up run from west to east. The pilot stated that he forgot about the power lines until they became visual again at close range. Knowing he would not be able to climb the aircraft above the cables in the distance remaining, the pilot elected to fly between the lines and the fence. The aircraft struck the two lower cables of the power lines, tearing the fin and rudder from the airframe. The aircraft continued airborne for approximately one kilometre before rolling to the right and striking the ground. It then began to break up as it cartwheeled across the paddock, finally coming to rest inverted. An inspection of the area revealed that the poles that supported the power lines would have been difficult to see, when approaching from the west, as their outline merged with trees in the paddock.

Download Final Report
[ Download PDF: 23KB]
General details
Date: 24 April 1990 Investigation status: Completed 
Time: 1730  
Location   (show map):30 km S Boggabilla Investigation type: Occurrence Investigation 
State: New South Wales Occurrence type: Wirestrike 
Release date: 08 May 1991 Occurrence class: Operational 
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Air Tractor Inc 
Aircraft model: AT301 
Aircraft registration: VH-AYK 
Serial number: 301-0382 
Type of operation: Aerial Work 
Damage to aircraft: Destroyed 
Departure point:Agricultural Airstrip 30 km S Boggabilla NSW
Departure time:N/A
Destination:Agricultural Airstrip 30 km S Boggabilla NSW
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