Mica Peak Air Force Station

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Mica Peak Air Force Station Air Defense Command (ADC)
Mica Peak AFS Location of Mica Peak AFS, Washington
Coordinates	47°34′26″N 117°04′52″W / 47.57389°N 117.08111°W / 47.57389; -117.08111 (Mica Peak AFS SM-151)
Type	Air Force Station
Site information
Controlled by	United States Air Force
Site history
Built	1956
In use	1956-1979
Garrison information
Garrison	823d Aircraft Control and Warning Squadron

Mica Peak Air Force Station (ADC ID: SM-151, NORAD ID: Z-141) is a closed United States Air Force General Surveillance Radar station. It is located atop Mica Peak, 6.3 miles (10.1 km) east-northeast of Mica, Washington. It was closed in 1975 by the Air Force, and turned over to the Federal Aviation Administration (FAA).

Today the site is part of the Joint Surveillance System (JSS), designated by NORAD as Western Air Defense Sector (WADS) Ground Equipment Facility J-79.

History

Mica Peak Air Force Station was initially part of Phase II of the

Mobile Radar program. The Air Force approved this expansion of the Mobile Radar program on 23 October 1952. Radars in this network were designated "SM." The station was logistically supported by the .

The station became operational on 1 July 1956 when the 823d Aircraft Control and Warning Squadron was assigned to the new station on 1 July 1956. The squadron started operating

(FAA).

During 1960 Mica Peak AFS joined the

McChord AFB

.

In 1962 the search radar was upgraded and redesignated as an

AN/FPS-90

height-finder radar was added. The AN/MPS-14 was later retired. On 31 July 1963, the site was redesignated as NORAD ID Z-141.

In addition to the main facility, Mica Peak operated several

AN/FPS-14

Gap Filler sites:

• Porthill, ID (SM-151C) 48°59′36″N 116°28′51″W / 48.99333°N 116.48083°W / 48.99333; -116.48083 (SM-151C)
• Moyie Springs, ID (SM-151D) 48°45′48″N 116°12′34″W / 48.76333°N 116.20944°W / 48.76333; -116.20944 (SM-151D)
• Yaak AFS, MT (SM-151E) 48°51′44″N 115°43′18″W / 48.86222°N 115.72167°W / 48.86222; -115.72167 (SM-151E)

Over the years, the equipment at the station was upgraded or modified to improve the efficiency and accuracy of the information gathered by the radars. In 1967 the search radar was upgraded to an

AN/FPS-116

. The 25th ADS shut down operations on 1 October 1979.

The FAA assumed control of the station on 1 October 1979, however the Air Force maintained the height-finder radar until 1988 when that radar was retired. Through the mid-1990s, the FAA continued to operate the AN/FPS-67B set at this site. That radar was then replaced by an

(JSS) site today.

Air Force units and assignments

Units

• Constituted as the 823d Aircraft Control and Warning Squadron on 30 December 1954

Activated at

Geiger Field

, Washington on 8 April 1955

Moved to Mica Peak AFS on 1 July 1956

Redesignated as 823d Radar Squadron (SAGE) on 1 September 1960

Inactivated on 1 June 1975

Assignments

• 9th Air Division, 1 July 1956
• 25th Air Division, 15 August 1958
• 4700th Air Defense Wing
  , 1 September 1958
• Spokane Air Defense Sector, 15 March 1960
• Seattle Air Defense Sector
  , 1 June 1963
• 25th Air Division, 1 April 1966 – 1 June 1975

See also

• List of USAF Aerospace Defense Command General Surveillance Radar Stations

References

 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 Mica Peak AFS, WA