Atlas-SGS
The Atlas E/F (or SB-1A) was an American expendable launch system built using parts of decommissioned SM-65 Atlas missiles. The SGS upper stage, which consisted of two series-burning solid rocket motors, was used on twelve Atlas E/F launches, with early GPS satellites.
Missions: 12
Successes: 11
Partial Failures: 0
Failures: 1
Success Streak: 4
Success Rate: 91.7%