Seattle Air Route Traffic Control Center

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The Seattle Air Route Traffic Control Center (or ZSE or Seattle Center or Seattle ARTCC) is the area control center responsible for controlling and ensuring proper separation of IFR aircraft in Washington state, most of Oregon, and parts of Idaho, Montana, Nevada, and California, as well as the neighboring area into the Pacific Ocean.^[1]

The control center is located at 3101 Auburn Way S, Auburn, Washington, which is 11.5 miles (18.5 km) from Seattle–Tacoma International Airport, the only Class B airport served by the center.^{[citation needed]} The center was moved from Sea-Tac to a three-story facility in Auburn in August 1962.^[2][3] The Auburn facility was the first to replace its radar systems with digital displays in 1999.^[4]