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Germanwings crash: the ins and outs of the two-person rule http://www.birmingham.ac.uk/news-archive/2015/germanwings-crash-the-ins-and-outs-of-the-two-person-rule
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Germanwings crash: the ins and outs of the two-person rule http://www.birmingham.ac.uk/news-archive/2015/germanwings-crash-the-ins-and-outs-of-the-two-person-rule
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