The 627th Radar Squadron served as a General Surveillance Radar Unit in 1957 and was inactivated in 1968.
Chappell became South Australian captain when the long-serving Les Favell retired at the start of the 19701971 season. The unit was reactivated in 1957 as a General Surveillance Radar unit under ADC, providing for the air defense of the Gulf Coast of North America, although it was apparently only a paper unit without personnel or equipment until moving to its programmed site in Mississippi. It was discontinued and inactivated in 1968, when the Department of Defense decided to draw down air defenses in the Gulf Coast region. 
