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Automation
u Control techniques very different for different facilities
(Center, TRACON, Tower…)
u Even among same-type facilities, procedures vary
widely (Chicago Center vs Ft. Worth Center)
u Airspace description data not always easily parsed
u Electronic system outputs do not always reflect reality
u Every rule has exceptions
u Difficult/costly to change procedures at the moment
new tools are introduced (need fallback position)
u Lots of politics among FAA, unions, airlines...
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Redesigning Air Traffic Control(4)
