<Tr> <Th> Added to NRHP </Th> <Td> September 12, 1997 </Td> </Tr> <Tr> <Th> Designated VLR </Th> <Td> June 27, 1995 </Td> </Tr> <P> Ronald Reagan Washington National Airport (IATA: DCA, ICAO: KDCA, FAA LID: DCA) is an airport in Arlington, Virginia that acts as the primary airport serving Washington, D.C. . It is the nearest commercial airport to the capital and serves the Baltimore--Washington metropolitan area . For decades it was called Washington National Airport before being renamed to honor President Ronald Reagan in 1998 . The Metropolitan Washington Airports Authority (MWAA) operates the airport with close oversight by the federal government due to its proximity to the national capital . </P> <P> DCA is located in the neighborhood of Crystal City in the county of Arlington, Virginia, 5 miles (10 km) south of Downtown Washington . It covers 861 acres (348 ha) of land . </P>

What does the airport code dca stand for