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3. Heathrow lander

Alternative clues for the word sst

• Descriptive aircraft letters
• Mach 1 beater
• Swift jet
• Ret. boomer
• Plane with a machmeter: Abbr.
• Former flyer
• Sound barrier breaker: Abbr.
• Old J.F.K. sight
• Display at the Intrepid Sea-Air-Space Museum, for short
• Former fast flier across the Atl