Abstract: Process and system for determining radiation exposure in airplanes The invention pertains to a process for the determination of the radiation load, respectively the dosage (effect) of the radiation prevailing in airplanes with the aid of an algorithm, with which the spectral composition of the encumbering radiation can be determined and which is subject to the altitude as well as the geographical, respectively the geomagnetic longitude and latitude, respectively, that the portions of the individual types of radiation of the locally total spectrum can be determined, or else have been determined.