5
A typical source of such images are databases from NASA : for instance the seasonal "Blue Marble" cloudless earth and the "Black Marble" night lights images. That image dataset is as far as I know free of copyright.
The inflight system vendor will probably have used some customization and added additional layers specific to the capabilities of their ...
3
North Korea charges about $740 per flight, so cost is not the issue - the savings by reducing a flight path by a few hundred miles can be considerate.
Some of the reasons are due to South Korea, from the same article:
South Korea banned the use of North Korea airspace for aircraft coming
in and out of the country's airports in 2010, following the ...
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