This responsibility for medical safety is twofold. One is to insure that operators of aircraft have no condition that will interfere with operating an aircraft or will suddenly and unexpectedly incapacitate the person. The second is the selection of ill persons who may be transported by air without harmful effects. The general physical standards for pilots, and specifically the standards of the Federal Aviation Agency, are valuable aids in determining the medical safety of an individual's operating an aircraft.
Tillisch JH. Medical Aspects of Safety in The Air. JAMA. 1960;174(10):1300-1303. doi:10.1001/jama.1960.03030100068014