Wikipedia
Epcard
EPCARD (European Program Package for the Calculation of Aviation Route Doses) is a software program that calculates radiation exposure of aircrews. The software code is based on the FLUKA transport code. EPCARD allows calculation of a simulated dose from most important components of penetrating cosmic radiation on any aviation route and for any flight profile at altitudes from 5 to 25 km.
Epcard helps airlines monitor radiation exposure, and comply with regulations relating to this area.