<unk>  (SCAA) is a registered charity which assists the Scottish Ambulance Service (SAS) with emergency medical services through the provision of helicopter-based air ambulances. SCAA air ambulances complement the state-funded aircraft that also operate across<unk> . A Eurocopter EC135 is based at Perth Airport. A second EC135 operates from Aberdeen Airport. Both are crewed by SAS paramedics and are tasked from the SAS ambulance control centre at Cardonald. , they have flown 1,300 missions. The charity's first helicopter - G-NDAA, a MBB Bo 105<unk>  - G-SCAA, an Airbus H135
Scotland's Charity Air Ambulance
London's Air Ambulance Charity
Dorset and Somerset Air Ambulance
Hampshire and Isle of Wight Air Ambulance
Children's Air Ambulance
Civil Air Search and Rescue Association
SA Ambulance Service
USNS Mercy 