A man has fallen up to 13 metres from a shed near Narrabri, suffering possible spinal injuries.
NSW Ambulance and the Westpac Rescue Helicopter Service (WRHS) were called to the property east of the town this morning.
A WRHS spokesman said the chopper had been called about 9.30am, with reports a 50-year-old man had been resheeting a large hay shed and had apparently fallen from the roof.
NSW Ambulance paramedics and the helicopter's critical care medical team treated the man for back injuries.
After stabilising him, the man was flown directly to Royal North Shore Hospital in a stable condition with possible spinal injuries.
The incident came the day after an elderly man fell from a ladder at a property in Aberdeen in the Upper Hunter.
Shortly after 6.30pm on Monday, the WRHS and NSW Ambulance were tasked to help an 84-year-old who had falled about six metres.
Paramedics treated him at the scene for lower limb fractures and possible pelvic injuries.
He was taken by road to Muswellbrook District Hospital then flown by the WRHS to John Hunter Hospital in a stable condition.