Last night, they were in a stable condition in Dunedin Hospital.
The cause of the crash has yet to be determined and police still have to interview several witnesses.
Representatives of the Civil Aviation Authority will visit the plane wreckage today before it is removed for examination.
A post mortem will be conducted on Mr Sloan's body in Dunedin today.
Last night, golfer Dave Cruickshank said he and two others tried to get the people out of the plane despite the strong smell of leaking fuel.
"There was lots of fuel everywhere because of the angle which the plane was on. It was basically pouring over the engine cowl," he said.
"We had to make a split-second decision to get them out ... We didn't have much of a choice."
An aircraft refueller at Queenstown airstrip, Mr Cruickshank said he was "well aware" of the dangers the spilled fuel presented to everyone.
One of the passengers had been thrown almost out an open door of the aircraft, Mr Cruikshank said.
Paper, maps, and plane debris had littered the fuel-soaked site.
All the time, the threat of the fuel igniting was in the back of his mind, he said.
"There was a risk of it going up. We just had to try and do what we could."
The Cessna 172 fixed high-wing light aircraft crashed in a rough embankment near the eighth hole of the golf course, about 2km from Arrowtown, about 3.15pm.
The Civil Aviation Authority investigators will begin assessing the wreckage today.
CAA spokeswoman Emma Peel said Queenstown police would control the scene overnight until the three investigators arrived.
- additional reporting: Otago Daily Times
