On the surface, Helios Airways flight 522 seems ominous, as if it had been done on purpose. Why else would oxygen masks have been deployed with no move to descend to a breathable altitude? Why else ...
Into the Shadows on MSN
The plane kept flying but everyone was unconscious
Helios Airways Flight 522 took off from Cyprus on a routine trip to Athens. Minutes later, a simple pressurization mistake began draining oxygen from the cabin. One by one, the pilots and passengers ...
A lack of oxygen in the cabin incapacitated Helios Airways Flight 522's crew, and the plane eventually crashed into a mountain after running out of fuel.
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