The Westpac Rescue Helicopter was tasked on the medical retrieval to Moree Hospital to transfer the woman to John Hunter Hospital in Newcastle.

The woman was suffering a medical condition which required specialist treatment.

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She was stabilised by the Helicopter Critical Care Medical Team prior to the flight to Newcastle.

No further details on the woman's condition were provided.

It's the second day in a row that the chopper has been to Moree, after airlifting a 70-year-old man to Taree Hospital on Tuesday afternoon.