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The 503d Air Defense Group is an inactive 25th Air Division of Air Defense Command at Portland International Airport, Oregon. It was inactivated on 18 August 1955.
The wing.
The group was activated once again in 1953, when ADC established it as the headquarters for two dispersed fighter-interceptor squadrons and the medical, maintenance, and administrative squadrons supporting them. It was replaced in 1955 when ADC transferred its mission, equipment, and personnel to the 337th Fighter Group in a project that replaced air defense groups commanding fighter squadrons with fighter groups with distinguished records during World War II.
The Hobson Plan),[8] which was adopted to unify control at air bases.[9] It was disbanded in 1948.[10]
During the [14]
Two days later, the 497th Fighter-Interceptor Squadron, flying Lockheed F-94 Starfire aircraft equipped with airborne intercept radar and armed with 20 mm cannons,[15] was activated as the group's permanent operational squadron.[16] In May 1953, the 357th FIS was transferred to French Morocco and was reassigned.[13] In 1954, the 497th FIS converted to Northrop F-89 Scorpion aircraft armed with HVAR rockets.[15] The group was inactivated[11] and replaced by the 337th Fighter Group (Defense) in 1955[17] as part of ADC's Project Arrow, which was designed to bring back on the active list the fighter units which had compiled memorable records in the two world wars.[18] The group was disbanded once again in 1984,[19] but reconstituted in 1985[20] as a base support organization. It has never been active since then.
This article incorporates public domain material from websites or documents of the Air Force Historical Research Agency.
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