Mostly all air evacuation establishments are specified as being privately -held fleets. Outpatients that seek the services of medical air evacuation establishments can not go by normal airplane charters — because these case patients are dependent on an IV care setup for narcotics. Individuals often will seek medivac companies with the assistance of the social workers directory. As they do not have the ability to go on public charter airline service — because they are not in a non critical circumstance , airevac services are required. Many outpatients have need of a seasoned medical technician or a complete supply of respiratory equipment ; and accordingly they are not good to be transported on the the public airline service. In the case where there are incapacitated patients that are not good to go by regular commercial airline outfits — on account of the fact that they would be categorized as being not in a medically self sustaining condition, there must be charters that are there to transfer patients for the predicament of any patient.