Madera Air Force Station

Madera AFS was one of twenty-eight stations built as part of the second segment of the Air Defense Command permanent radar network. Prompted by the start of the Korean War, on July 11, 1950, the Secretary of the Air Force asked the Secretary of Defense for approval to expedite construction of the permanent network. Receiving the Defense Secretary's approval on July 21, the Air Force directed the Corps of Engineers to proceed with construction.

The 774th Aircraft Control and Warning Squadron was activated at the new station on 27 November 1950, and assumed the coverage of a temporary "Lashup" site at Fort MacArthur (L-43) operating an AN/TPS-1B radar, and initially the station functioned as a Ground-Control Intercept (GCI) and warning station. As a GCI station, the squadron's role was to guide interceptor aircraft toward unidentified intruders picked up on the unit's radar scopes.

The squadron began operating AN/FPS-3 and AN/FPS-4 radars from Madera AFS in January 1952. In 1958 the height-finder radar was replaced by AN/FPS-6 and AN/FPS-6A radars. In 1959 an AN/FPS-20 search radar superseded the AN/FPS-3. In 1960 the Air Force upgraded an AN/FPS-6A to become a -6B.

During 1961 Madera AFS joined the Semi Automatic Ground Environment (SAGE) system, feeding data to DC-18 at Beale AFB, California. After joining, the squadron was redesignated as the 774th Radar Squadron (SAGE) on 15 January 1961. The radar squadron provided information 24/7 the SAGE Direction Center where it was analyzed to determine range, direction altitude speed and whether or not aircraft were friendly or hostile. In August 1963, the SAGE data feed was reassigned to DC-17 at Norton AFB.

The Air Force upgraded the search radar, first to an AN/FPS-20A, and then to an AN/FPS-66. By 1963 this AN/FPS-66 search radar operated in conjunction with AN/FPS-6 and AN/FPS-90 height-finder radars, and on 31 July 1963, the site was redesignated as NORAD ID Z-74.

Reductions in ADC funding led to Madera Air Force Station being inactivated on June 25, 1966. Today, the site remains largely intact, although at some point, the radar towers had been removed. When the station was shut down, it was handed over to a Native American group which operated the property as a vocational technology center. The site was sold off to someone else & used for unknown purposes, and then the current owner bought it in the late 1980s or early 1990s.

• List of United States Air Force aircraft control and warning squadrons
• United States general surveillance radar stations

 This article incorporates public domain material from the Air Force Historical Research Agency.

• Cornett, Lloyd H. and Johnson, Mildred W., A Handbook of Aerospace Defense Organization 1946–1980, Office of History, Aerospace Defense Center, Peterson AFB, CO (1980).
• Winkler, David F. & Webster, Julie L., Searching the Skies, The Legacy of the United States Cold War Defense Radar Program, US Army Construction Engineering Research Laboratories, Champaign, IL (1997).
• Information for Madera AFS, CA