| FirstPrimo launchvolo attemptdi ofun anmissile Atlas vehicle. Performance was normal until T+30 seconds when the missile lost thrust due to overheating that burned through wiring in the boattail section. Range Safety issued the destruct command at T+50 seconds. The flight was considered a "partial success" because the Atlas's balloon skin had maintained its structural integrity until vehicle destruction.
|-
| 25 settembre 1957
Riga 90:
| {{convert|120|km|mi}}
| Successo
| Primo volo avvenuto con successiosuccesso di un missile Atlas.
