One day it's a Boeing 767 airliner but, just hours later, it's a military aeromedical evacuation aircraft. That is, if US Air Force physicians call on the Civil Air Reserve Fleet (CRAF). Carriers under contract—currently Delta Air Lines, Trans World Airlines, and US Air Ways—then have 48 hours to remove most passenger seats in preparation for insertion of stanchions for 87 to 111 litters, electrical power converters, and equipment for changing 450 liters of liquid oxygen into gaseous medical grade. Between 26 and 56 seats are left for ambulatory patients, four flight nurses, and six technicians. The patient care team has intravenous solutions and supplies, medications, and supplemental medical equipment.
Gunby P. No Plain Planes Anymore. JAMA. 1999;281(22):2079. doi:10.1001/jama.281.22.2079-JMU91001-3-1