From Aerojet - The Creative Company, 1995:
The Super Chief I used the Talos booster as the first stage and the Sergeant rocket as the second stage. Super Chief II also uses a Talos booster as first stage but uses Castor I as second stage. The Super Chief III variation used the larger Castor II as second stage. Super Chief could put 1500 pounds to an altitude of 120 miles. The booster had an imposing 115,930 lbf average thrust. The 31-inch body diameter and nearly 50 ft. length made the Super Chief a very imposing sounding rocket and one of the largest of the non-V2 sounding rockets.
Failures: 2. Success Rate: 93.55%. First Fail Date: 1988-03-07. Last Fail Date: 1993-02-11. Launch data is: continuing.
First Launch: 1974.03.17.
Last Launch: 2007.06.15.
Number: 31 .