@Landroger, TLDs cannot reliably measure cosmic radiation which is the main radiation source for flying personnel. Therefore it is calculated only as measurements cost too much money. By the way, according to our yearly radiation training flying personnel is still considered the highest dosed worker group, even compared to nuclear plant workers. The total dose is still low though. For the 8 months before January i had around 2 mSv with around 490 hours flown over the last 12 months from today.