McClellan Air Force Base
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|McClellan Air Force Base|
|Part of Air Force Materiel Command (AFMC)|
|Sacramento County, California|
McClellan AFB, 9 May 2002
|Type||Air Force Base|
|Controlled by||United States Air Force|
|In use||Open 1938 - IN USE
1948-IN USE (as McClellan AFB)
|Garrison||Air Force Materiel Command|
McClellan Air Force Base (1935–2001) is a former United States Air Force base located in the North Highlands area of Sacramento County, 7 miles (11 km) northeast of Sacramento, California. For the vast majority of its operational lifetime, McClellan was a logistics and maintenance facility for a wide variety of military aircraft, equipment and supplies, primarily under the cognizance of the Air Force Logistics Command (AFLC) and later the Air Force Materiel Command (AFMC).
In 1986, the U.S. Air Force established the McClellan Aviation Museum on what was then McClellan Air Force Base. The museum was later chartered by the National Museum of the United States Air Force.
The United States Coast Guard previously operated Coast Guard Air Station Sacramento at McClellan AFB as a tenant activity, operating and maintaining several HC-130 Hercules aircraft. CGAS Sacramento continues to operate at McClellan following its closure as an Air Force Base and is the only remaining military aviation unit and installation on the airfield.
In 2005 the McClellan Aviation Museum changed its name to the California Aerospace Museum. Various military aircraft sit on display inside one of the hangars, and many more are outside on the flightline. The museum has displays which highlight the mission of the base when it was active, as well as neighboring bases such as Beale AFB, Travis AFB and the since closed Mather AFB. The museum hosts educational programs to schools in the local area.
In 2015 the Sacramento Bee reported that McClellan Airfield had been designated as a Superfund site, because the Environmental Protection Agency has identified 326 waste areas on the base. Water wells closest to the base in the Rio Linda-Elverta district, have had the highest levels of hexavalent chromium, which is a known carcinogen. Water from six of 11 wells tested above the state’s maximum contaminant levels for chromium-6, which is 10 parts per billion. 
- Pacific Air Depot, 1935 - 1 February 1937
- Sacramento Air Depot 1 February 1937 - 1 December 1939
- McClellan Field, 1 December 1939 - 13 January 1948
- McClellan Air Force Base (dates to be confirmed, closed 2001)
Major command assignments
- Materiel Division, United States Army Air Corps, 24 August 1938 - 11 December 1941
- Air Service Command, 11 December 1941 - 17 July 1944
- Army Air Forces Materiel and Services Command, 17 July 1944 - 31 August 1944
- Army Air Forces Technical Service Command, 31 August 1944 - 1 July 1945
- Air Technical Service Command, 1 July 1945 - 9 March 1946
- Air Materiel Command, 9 March 1946 - 1 April 1961
- Air Force Logistics Command, 1 April 1961 - 1 July 1992
- Air Force Materiel Command, 1 July 1992 - 13 July 2001
- California World War II Army Airfields
- Western Air Defense Force (Air Defense Command)
- 8th Air Division
- Doolittle Raid
- McClellan AFB Annex
- "About the Aerospace Museum of California". Aerospace Museum of California. Archived from the original on 2006-06-20.
- EDWARD ORTIZ (June 21, 2015). "Groundwater search turns up high carcinogen readings near McClellan". The Sacramento Bee. Retrieved 24 June 2015.
- California Military History Museum, McClellan Air Force Base
- Aerospace Museum of California website
- Oroville Mercury Register re: Aero Union move to McClellan