He confirmed the plane was returning from Invercargil to a private Arrowtown airstrip several hundred metres away from the crash site.
Tarpaulins are in place covering part of the scene. A hearse has also arrived at the golf course.
Ed Lamont, who owns the Mt Soho winery overlooking the golf course, said emergency services had cordoned off an area of the green.
"There's a lot of activity there,'' he said.
The Fire Service was in attendance and a helicopter had "come in and out a couple of times''.
Mr Lamont said he saw a couple of light planes coming and going about 20 minutes before the crash.
The plane may have come from a landing strip on private property next door to the winery, he said.
"It is the whitebait season so there is a bit of activity from Queenstown to the West Coast.''
Mr Lamont said weather conditions were not good.
"We've just had a bit of a front come in and there was a bit of wind, probably 20 or 30 knot gusts from time to time, and just a bit of light rain. So it wasn't terrific conditions.''
- OTAGO DAILY TIMES, APNZ