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3. Erstwhile speeder

Alternative clues for the word sst

• Retired Mach 2 breaker
• Sound barrier breaker: Abbr.
• Barrier breaker, for short
• Bygone air inits.
• Former Atl. traverser
• Sight at Dulles
• Old flying option
• Aerospatiale product
• JFK flier, once
• Ret. jet