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 ...
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.
Green Dot Aviation Official on MSN
Two flights continued silently until disaster became unavoidable
Everything appeared normal until crews realized their aircraft systems could not be trusted. Aeroperú Flight 603 lost ...
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