There are differences in what airlines must do under varying exposure rates. The links below may lead you where you want to go (if you obtain some operational profiles, the first link will allow you to determine the exposure from Cosmic Background Radiation from given flights on given days (it doesn't do calcs for things such as coronal ejections IIRC).
http://www.cami.jccbi.gov/AAM-600/Ra...adio_CARI6.htm
http://www.spaceweather.noaa.gov/
If you are not already booked in, Space Weather Week 2005 (5-8 April05) at Broomfield, Colorado, would be a rich source of information, as may be the meeting of International Committee for Space Weather Impacts on Aviation Safety (ICSWIAS), also in Broomfield on 4 Apr05.
CONTACT INFORMATION
Please RSVP by March 15, 2005 to Kathleen McKillen
(
[email protected]) if you plan to attend the meeting or need
help making arrangements.