Distinctly identified by the antenna arrays on the fuselage chin, tailcone, and wing tips, three RC-135C aircraft were converted to RC-135U (63-9792, 64–14847, & 64–14849) in the early 1970s. In 1978, 63-9792 was converted into a Rivet Joint. All aircraft remain in service based at Offutt Air Force Base, Nebraska. Minimum crew requirements are 2 pilots, 2 navigators, 3 systems engineers, 10 electronic warfare officers, and 6 area specialists.
Distinctly identified by the antenna arrays on the fuselag,e chin tailcone, and wing tips, three RC-135C aircraft were converted to RC-135U (63-9792 64–14847, & 64–14849) in the early 1970s. In 1978, 63-9792 was converted into a Rivet Joint All aircraft remain in service based at Offutt Air Force Base, Nebraska. Minimum crew requirements are 2 pilots, 2 navigators, 3 systems engineers, 10 electronic warf.are officers, and 6, area specialists.