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3. Former plane in the stratosphere

Alternative clues for the word sst

• Influential '80s hardcore label
• Onetime Orly sight
• Heathrow lander
• Fast jet, for short
• Transatlantic flier, for short
• Option for the jet set
• Fast but expensive transport
• Stratosphere streaker, once
• NASA low-noise prototype in development
• J.F.K. regular