Blood for life saving transfusions will now be kept onboard the Great North Air Ambulance.
It is the result of a partnership with the charity BloodBikes whose drivers will deliver the blood to the ambulance in a temperature controlled bag on the back of their motorbikes.
It is based on methods first used in Afghanistan.
It previously wasn't possible due to the difficulty in storing blood on the helicopters. It is hoped many lives will be saved by this new scheme.