RACQ CareFlight Rescue flew to Lake Wabby on the island's east coast to treat a 15-year-old girl with a shoulder injury on Tuesday afternoon.

It was the third mission to Fraser Island in 24 hours after crews were called out on Monday night to airlift a man aged in his thirties suffering a medical condition, then again about 10am on Tuesday to help a 40-year-old woman experiencing chest pain.

About 5.30pm on Tuesday, the Sunshine Coast crew flew to the island to treat a girl, on a school excursion from the Sunshine Coast, who was injured when a friend landed on top of her during a friendly game of frisbee.

RACQ CareFlight Rescue air crew-man Rick Harvey winched the helicopter's intensive care flight paramedic down to the scene to assess the girl's injury.

"Night winching is always more difficult and tonight's strong 30 knot winds added to the challenge," Mr Harvey said on Tuesday.

"We were also winching down to a large sand blow where no visible markers were in sight, so it was difficult to grasp an indication of height."

"We followed all our normal procedures which ensured a safe and successful outcome getting our intensive care flight paramedic down to the patient."

The girl was treated at the scene and driven, accompanied by the helicopter's intensive care flight paramedic, one-and-a-half hours away to Kingfisher Bay Resort, on the island's west coast, where the RACQ CareFlight Rescue helicopter had landed.

She was airlifted to Nambour General Hospital in a stable condition.