Synopsis
On 12 February 2002, at approximately 0500Z, a Hughes 369D helicopter (registration ZS-HWY) operated by the South African Police was conducting a marijuana (dagga) spraying operation near Weenen. The aircraft was one of two helicopters used for spraying herbicide on crops. Earlier that morning, both helicopters lifted off at around 0345Z and sprayed for about an hour before returning to the temporary base to refill with herbicide.
As the pilot of ZS-HWY returned, he noticed the other helicopter had already departed for the spraying area. Opting to save time, he conducted a straight-in approach from a southerly direction. On short finals, high trees were present. After clearing the trees, the pilot heard a loud bang and observed an object penetrating the right-hand side of the cabin. The nose then pitched down sharply, approximately 80 to 90 degrees, and the aircraft impacted the ground. Investigation revealed that the helicopter had struck an elevated floodlight structure during the approach.
According to a statement from a police officer providing ground assistance, the accident helicopter approached from the north, opposite to the direction used during the previous two days when all approaches were from the south. Weather conditions at the time were fine, with no wind, good visibility, temperature of +20°C, and 6/8 cloud cover; the sun was starting to break through.
Probable Cause
The pilot failed to observe an elevated stadium floodlight structure, which was obscured by the right-hand side of the instrument panel, during final approach for landing. A subsequent impact followed with the light pole on the right side of the cabin (pilot seated left), resulting in a loss of control.