 There are also a few groups who do fly non-ambulatory (stretcher) patients, and at least one group has a fully certified charitable air ambulance.Pilots generally must have qualifications appropriate for each group's kinds of missions flown and for the weather and circumstances of the area where they will be flying.These vary considerably from group to group, so pilots need to inquire of each group in which they may be interested to see if they meet that group's requirements.