Clue: Fast planes: Abbr.

Answer: SSTS

Length: 4

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Similar Clues:

• Retired fast planes: Abbr. (SSTS with 4 letters)
• Former fast planes: Abbr. (SSTS with 4 letters)
• Grounded fast planes: Abbr. (SSTS with 4 letters)
• Former fast-flying planes: Abbr. (SSTS with 4 letters)
• Fast and furious, e.g.: Abbr. (ADJS with 4 letters)
• Fast, to slow: Abbr. (ANT with 3 letters)
• "Fast cash" sources: Abbr. (ATMS with 4 letters)
• When planes are expected: Abbr. (ETAS with 4 letters)
• When planes are due: Abbr. (ETAS with 4 letters)
• Fast planes (e.g. JETS with 4 letters)