Four Asian tourists and pilot Matsumi Sato received minor injuries when the Bell JetRanger helicopter crashed in the theme park's car park at about 4pm AEST yesterday.
The helicopter lost power as it came in to land, but the pilot managed to steer it away from crowds before crash-landing in an empty part of the car park.
Dreamworld spokeswoman Shelley Winkel says the chopper took park visitors on joy flights.
"The business itself is owned by James Technology and I have spoken with the owner and he is going to launch a full investigation into it," she said.
"He was saying there is A1 maintenance on that machine and we will be working him and the authorities just to find out as much as we can as to what happened."
Ms Winkel says Mr Sato's helicopter lost power while preparing to land but he managed to steer the machine away from danger.
"He's got an incredible amount of experience," she said.
"He's a grade one instructor pilot and he's got more than 8,500 hours of piloting experience, so we have had someone with a huge amount of experience.
"I guess the outcome has been as good as can be expected given the situation."
Acting Superintendent Neil Haslam from Queensland Police says investigators want to know why the helicopter lost power while preparing to land.
"At this particular point in the time the forensic investigations are continuing," he said.
"The Air Transport Safety Bureau are assisting and are attending the Gold Coast today to visit the forensic crash unit to obtain a briefing and they'll progress their investigations along with our people out there.
"I guess it's pretty obvious that a significant loss in power has occurred and they'll be trying to determine what caused that."
'Lucky to be alive'
Ambulance spokesman Cary Strong said yesterday Mr Sato and the four passengers were taken to the Gold Coast hospital with relatively minor injuries and are lucky to be alive.
"Four of those have been treated with cervical type injuries and the fifth person has actually been treated with a lower spinal injury in the coccyx area, cervical area," he said.
"The only limb injury we have sustained was one of them has a minor ankle injury and that's about it."
Queensland Fire and Rescue spokesman Mark Gribble said crews at the crash scene said it was fortunate the chopper's fuel did not ignite.
"Sparks could certainly have ignited broken fuel tanks - this sort of fuel is very flammable indeed," he said.
Witness Lauren Nicole said yesterday the pilot had done a good job.
"I'm really thankful that he did as far away from the other cars and other citizens as possible, which was really good," she said.
