Crossword clues for Below Mach 1 8 letters:SUBSONICBelow Mach 1SUBSONICSlower than Mach 1SSTMach 1 breakerYEAGERFirst pilot to exceed Mach 1RIBOne of two broken by Chuck Yeager the day before first breaking Mach 1 (!)SSTMach 1 breaker, onceSSTRetired mach 1 breakerSPEEDOFSOUNDMach 1SSTMach 1 flierSUPERSONICBeyond Mach 1 [anagram of 23 Across]SONICMach 1 barrier.SSTSMach 1 fliersYEAGERFirst person to break Mach 1SSTMach 1 passerSOUNDWAVEIt travels at Mach 1SSTBygone Mach 1 breaker, for shortSSTBygone Mach 1 breaker, in briefAVIATEDWent Mach 1, maybeSSTMach 1 breaker, brieflySSTJet that broke Mach 1: Abbr.SUPERSONICFaster than Mach 1SSTMach 1 flyerSONICBOOMNoise created at a speed above Mach 1SSTMach 1 beaterSSTSMach 1 breakersSSTSMach 1 toppersTRANSONICApproaching Mach 1SONICBROOMHag's transportation that passes Mach 1?SONICAt Mach 1