Hammond Northshore Regional Airport is a city-owned, public-use, joint civil-military, general aviation airport located three nautical miles (6 km) northeast of the central business district of Hammond, a city in Tangipahoa Parish, Louisiana, United States. The airport was previously an uncontrolled facility utilizing VHF-band UNICOM as a Common Traffic Advisory Frequency (CTAF). As a result of the relocation of Army National Guard flight operations from Lakefront Airport to Hammond, a new control tower was constructed at the airport. This tower, manned by military air traffic controllers from the Air Operations Department of the Louisiana Army National Guard's Army Aviation Support Facility #1 at the airport, became operational on 15 December 2014.Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned HDC by the FAA but has no designation from the IATA.Facilities and aircraftHammond Northshore Regional Airport covers an area of 920acre at an elevation of 47 feet (14 m) above mean sea level. It has two runways: 13/31 is 6,502 by 100 feet (1,982 x 30 m) with an asphalt/concrete surface; 18/36 is 5,001 by 150 feet (1,524 x 46 m) with a concrete surface.