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==Other uses== * [[Terminal control area]], a volume of controlled airspace * [[Topology change acknowledgement]], a message in the 802.1D Spanning Tree Protocol (STP) * [[Transportation Corridor Agencies]], a toll road authority in Orange County, California * [[Traumatic cardiac arrest]], due to trauma * [[Tennant Creek Airport]], IATA airport code "TCA" * [[Turks and Caicos Islands]], country code * [[Tropical Cyclone Advisory]], tropical forecast service for international aviation safety {{disambiguation}}
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