Australian Transport Safety Bureau (ATSB) investigators say it is too early to conclude what caused a helicopter to crash on take-off from an oval in Melbourne.
Pilot Emma Bobridge, 45, was flying solo and managed to crawl from the wreckage after it crashed at the Collingwood Football Club's Olympic Park on Saturday.
The pilot, from Mornington, had been taking racegoers to and from Flemington Racecourse.
ATSB senior transport safety investigator Tony Simes said the helicopter wreckage and the company would be examined, with a report on the findings to be released in 30 days.
"We've got two investigators from Canberra on site today and tomorrow examining the site and any perishable evidence," he said.
"They will be talking to various witnesses and build a picture as to what happened. They will look at the site conditions, the markings around the site, environmental conditions and human factor conditions."
Mr Simes said the company's safety management systems would also be examined to try to identify any safety issues.
During the accident, the rotor blade of the helicopter flew 30 metres through the air before crashing into a parked car, but the pilot escaped with only a grazed thumb.
Advanced life-support paramedic Jason Pitman said the helicopter crashed on take-off.
"She braced herself and rode out the crash, then shut down the helicopter and crawled out of the wreckage to be met by other pilots on the edge of the oval," he said.
The woman was taken to the Alfred Hospital in a stable condition."Clearly she was distressed about what happened, but was also concerned for the welfare of other people in the area," Mr Pitman said.