If we assume the radiated power is 50,000 watts, I make the power the guy would get standing there as 1/30 millionth of what he could get from a microwave oven operating at the maximum allowed end of life leakage.
However, how much more cosmic radiation he got from flying at 30,000 or so feet than being on the ground is another matter......especially as the aluminium tube doesn't do much to stop that!