assigned arrival time

assigned arrival time (AAT)

The arrival time assigned to an aircraft landing at a specific airport, which is based on the area control center's (ACC) estimates and recalculated to resolve simultaneous demands at the airport.
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Under the LR-ATFM concept, long range international flights will be assigned arrival times well in advance to allow for the most fuel efficient en route phase of flight when a delay is required because of demand and capacity imbalances at the arrival airport.