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Cut Bank Air Force Station

From Wikipedia, the free encyclopedia

Cut Bank Air Force Station
Part of Air Defense Command (ADC)
Cut Bank AFS is located in Montana
Cut Bank AFS
Cut Bank AFS
Location of Cut Bank AFS, Montana
Coordinates48°56′32″N 112°48′21″W / 48.94222°N 112.80583°W / 48.94222; -112.80583 (Cut Bank AFS P-34)
TypeAir Force Station
Site information
Controlled by United States Air Force
Site history
In use1952-1965
Garrison information
Garrison681st Aircraft Control and Warning Squadron
Map all coordinates using: OpenStreetMap 
Download coordinates as: KML · GPX
Emblem of the 681st Radar Squadron
Emblem of the 681st Radar Squadron

Cut Bank Air Force Station (Perm ID: P-24, SAGE ID: Z-24) is a closed United States Air Force General Surveillance Radar station. It is located 30.4 miles (48.9 km) northwest of Cut Bank, Montana. It was closed in 1965.


The facility was hosted by the 681st Aircraft Control and Warning (AC&W) Squadron, Air Defense Command between April 1952 and June 1965. Cut Bank AFS replaced an earlier radar site at Del Bonita, Montana (LP-24) which had opened in March 1951.

The 681st AC&W Squadron started operating AN/FPS-3 and AN/FPS-4 radars in April 1952, 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. In 1958 an AN/FPS-20 search radar replaced the AN/FPS-3 at this site. In the following year two AN/FPS-6B height-finder radars superseded the AN/FPS-4.

In 1961 this site was integrated into the SAGE system, the squadron being re-designated as the 681st Radar Squadron (SAGE). 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 1962 the AN/FPS-20A was further upgraded and redesignated as an AN/FPS-66. In 1963 one AN/FPS-6B was removed and on 31 July, the site was redesignated as NORAD ID Z-24. In 1964 the other AN/FPS-6B was upgraded to an AN/FPS-90, and an AN/FPS-26A height-finder radar was installed.

In addition to the main facility, Cut Bank operated an AN/FPS-14 Gap Filler site:

The station was closed on 1 March 1965 as part of a general reduction of ADC. Today it is largely intact, and abandoned.

Air Force units and assignments


  • Established as 681st Aircraft Control and Warning Squadron
Activated 1 March 1951 at Del Bonita (renamed Cut Bank Air Force Station, Montana on 1 December 1953)
Redesignated as 681st Radar Squadron (SAGE) on 1 March 1961
Discontinued and inactivated on 25 June 1965


See also


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

This page was last edited on 3 July 2019, at 03:53
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