Variants
- S.XX - original military production version (95 built in series)
- S.XX bis - improved military version (2 built) with larger wings and tail. One sold to Mitsubishi
- S.20 bis-1 - racer
- S.20 bis-2 - racer with shortened wingspan
- S.20 bis-3 - racer with further shortened wingspan
- S.20 bis-4 - racer with even further shortened wingspan
- S.20 bis-5 - racer for Gordon Bennett cup (2 built). Radically modified wing design - upper wing changed to gull configuration.
- S.20 bis-6 - racer with shortened cabane struts and custom-built Hispano-Suiza engine
Read more about this topic: SPAD S.XX
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“Nationalist pride, like other variants of pride, can be a substitute for self-respect.”
—Eric Hoffer (1902–1983)