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3. Jet that once made a boom, in brief

Alternative clues for the word sst

• Barrier breaker, for short
• Grounded jet, for short
• Retired Mach 2 breaker
• Retired sonic boom producer
• Mach 1 breaker, briefly
• International airport lander
• Sidelined ocean crosser
• Mach 2 jet that ceased commercial flight in 2003: Abbr
• Former JFK lander
• Jet to Heathrow