Two people are in a critical condition after a helicopter carrying four people crashed at a remote site near Yulara, close to Uluru in the Northern Territory.
The crash happened just after 6.30pm on Wednesday.
The Royal Flying Doctor tweeted late on Wednesday night that two of the four patients were reported as critical.
Medical and police officers were hampered getting to the scene given the remote location.
"It has been a bit tricky for emergency services staff to get to," Northern Territory Police, Fire and Emergency Services spokeswoman told AAP.
No one was trapped and there were no fatalities, the spokeswoman said.
The Australian Transport Safety Bureau has been notified of the crash.
