Brown Field Municipal Airport (IATA: SDM, ICAO: KSDM, FAA LID: SDM) is in the Otay Mesa neighborhood of San Diego, California, United States, 13 miles (21 km) southeast of downtown San Diego and named in honor of Commander Melville S. Brown, USN, who was killed in an airplane crash in 1936. Its main runway is 7,972 feet (2,430 m) long. Its FAA/IATA airport code is SDM. Formerly Naval Auxiliary Air Station Brown Field, it is now a civilian reliever airport and a port of entry from Mexico. It is sometimes staffed by the U.S. Customs Service, but only upon request of incoming pilots to the Federal Aviation Administration. The development plans for the SDM airport have been announced on 4th Oct 2022, the development will occur in phases over 20 years. The plans include a new FBO terminal building and individual airplane hangars. There is also talk of adding a million square feet of retail and industrial buildings and possibly a hotel.