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Z
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Join Date: Jun 2005
Posts: 23,560
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Z
Join Date: Jun 2005
Posts: 23,560
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I think it's something to do with how many people are involved in each process? So there's only 1 captain on a plane, 2 co-pilots (i.e. the captain and the co-pilot), 4 cabin crew and I have no idea what the fourth thing would be or if I'm on the right track whatsoever...
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