On 1 May 1956, when 406th FIW converted to Tri-Deputate organization, assigning operational squadrons directly to the wing. The 406th Fighter-Bomber Group was inactivated. In June 1956 F-86D Sabre interceptors arrived from CONUS to equip the 87th Fighter-Interceptor Squadron which was transferred to the 406th from the 81st FBW assigned to RAF Shepherds Grove. The 87th FIS, however, physically remained at Shepherds Grove, but was under the organizational command of the 406th at Manston. In September 1955, the 87th was redesignated the 512th FIS.