San Marcos Regional Airport
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USGS aerial photo - 28 January 1995
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| Summary | |||||||||||||||||||
| Airport type | Public | ||||||||||||||||||
| Owner/Operator | City of San Marcos | ||||||||||||||||||
| Serves | San Marcos, Texas | ||||||||||||||||||
| Location | San Marcos, Caldwell County, Texas, USA | ||||||||||||||||||
| Elevation AMSL | 595 ft / 181 m | ||||||||||||||||||
| Coordinates | 29°53′34″N 097°51′47″W / 29.89278°N 97.86306°W / 29.89278; -97.86306 | ||||||||||||||||||
| Map | |||||||||||||||||||
  HYI Location of airport in Texas / United States Show map of Texas HYI HYI (the United States) Show map of the United States | |||||||||||||||||||
| Runways | |||||||||||||||||||
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| Statistics (2023) | |||||||||||||||||||
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San Marcos Regional Airport (ICAO: KHYI, FAA LID: HYI) is a public use airport located in Caldwell County, Texas, United States. It is four nautical miles (7 km) east of the central business districtofSan Marcos, a city that is mostly in Hays County. The airport is owned by the City of San Marcos and operated by Texas Aviation Partners.[1] It is located east of the border of Caldwell County and Hays County.[2] Before it was operated as a civilian airport it was known as Gary Air Force Base.
Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned HYI by the FAA but has no designation from the IATA.[3]
It was the site of the Gary Army Airfield
Organized San Marcans fought to save the base, and on November 20, 1964, President Lyndon B. Johnson announced in a speech at his alma mater, Southwest Texas State College[a] that the abandoned Camp Gary would be the site of a new federal vocational training facility called Job Corps. Today it's known as the Gary Job Corps Center, the largest in the nation.
In 2014, the airport was selected to be the location for the Aircraft Owners and Pilots Association's regional fly-in.[5]
San Marcos Regional Airport covers an area of 1,303 acres (527 ha) at an elevation of 595 feet (181 m) above mean sea level. It has three asphalt paved runways: 8/26 is 6,330 by 100 feet (1,929 x 30 m), 13/31 is 5,601 by 150 feet (1,707 x 46 m) and 17/35 is 5,214 by 100 feet (1,589 x 30 m).[1]
For the 12-month period ending June 5, 2023, the airport had 91,849 aircraft operations, an average of 251 per day: 98% general aviation, 2% military and <1% air taxi. At that time there were 219 aircraft based at this airport: 156 single-engine, 42 multi-engine, 14 jet, and 7 helicopters.[1]
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