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3. Former Mach 2 flier: Abbr

Alternative clues for the word sst

• Mach-1 surpasser
• Mothballed flier
• Grounded fast jet, briefly
• Bygone boom producer, briefly
• "___ Death Flight," 1977 TV film
• Certain retired craft, briefly
• Former JFK arrival
• Jet Set jet, once
• Tupolev-144, e.g.
• Onetime J.F.K. sight