The Taupo-based Greenlea Rescue helicopter was dispatched to the Midway hut in Te Urewera ranges this evening.
A man in his 80s suffered a cardiac event and was flown to Rotorua Hospital.
This followed on from another job on Friday night where the helicopter was tasked by the police to rescue two men in their early 30s, from the northern boundary of the military land north of Waiouru.
The two men, who were riding their trail bikes, found themselves in difficulties as darkness fell and the weather deteriorated.
They were flown to Taupo.