Yorkshire Air Ambulance Yorkshire Air Ambulance is an independent, life-saving charity covering the whole of Yorkshire, bringing critical, emergency medical care to those who need it most, faster than ever. From remote moorland and dales to busy town and city centres, YAA medics respond to those in need as quickly as possible. It is a vital lifeline for one of England’s most diverse and expansive counties and receives no government or NHS funding; charitable donations pay for every mission.