Radiation in the plane - what the airlines are silent about


I decided here to measure the radiation in the plane and was a bit shocked - it goes off scale and exceeds all acceptable norms! You can evaluate the dosimeter's indicators by photo. I studied the question in more detail, because I fly quite often ...
If the average permissible norm of radiation background on the ground does not exceed 20 micro-roentgen / hour, then in the plane of my dosimeter the indicator reached 400 micro-roentgen / hour! Is it a lot? According to calculations, for five hours in flight, at an altitude of 11,000 meters, the air passenger receives a radiation dose corresponding to a single X-ray translucency of the chest. But there are some but ...
During periods of solar activity (flares, etc.), the level of radiation in an airplane can go off-scale! Therefore, the cockpit has significantly more protection than the passenger compartment. Again, it depends on what height to fly and where. For example, in polar latitudes, where low tropopause radiation is greater.According to the assurance of one pilot, after the night flight Moscow - Norilsk and back (8.5 hours) I want to lie down and die, and with the same flight time, Uzbekistan still has enough strength to get home. Those who fly frequently naturally receive more doses of radiation per year.
Especially bad radiation affects pregnant women and children. If a pregnant woman, say, flies from New York to Tokyo, then in just one flight she can exceed the radiation dose acceptable for the unborn baby, which can lead to a sharp increase in the probability of birth defects and irreparable genetic damage in the newborn.
I googled this topic, and I realized that it is quite "muddy". If the cabin of a large airliner is made completely radiation-protected, then it will hold no more than 100–150 passengers and the economic benefit from the operation of such an aircraft is completely lost.

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