I was watching a video of the Shuttle piggyback 747 today and it got me to thinking. The airplane flys very infrequently obivously. So with that in mind, where does the crew that flys the 747 come from in terms of are they contract or NASA pilots and how do they remain current considering the fact that N911NA seldom flys. Not to mention upkeep on the airplane in terms of maintaining certification on certain systems.
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