Family members that seek the help of air evacuation companies cannot go on the usual commercial flights . That often is because these are case patients which have need of advanced cardiac life support. Many outpatients need IV solutions and infusion sets : and therefore these are the cases who are not able to go on the public charter airplane charters. As they are not able to go by your usual normal planes — due to the fact that these people need a heart monitor/defibrulator or a BLS flight staff , fixed wing air ambulance fleets must be used. Virtually all non emergency air ambulance crews would be defined as being privately held enterprises. Those people usually will try to find airevac operations with the help of the world wide web. It is known widely by those who work within hospitals that air ambulance companies are there when air transportation is needed.