A woman in her 40s was flown to Auckland City Hospital in a serious condition after being trapped in the light truck's cab for an hour.
Later that day, the Whitianga crew flew to Paeroa after a man in his 30s suffered burns to his head, neck and shoulders from hot water and acid cleaning equipment in a cow shed.
He was taken to Waikato Hospital in a moderate condition.
The Auckland Westpac Rescue Helicopter also responded to a woman in her 60s who broke her leg after falling from a ladder. She was also in a moderate condition.