| Answer | Crossword Clue |
|---|---|
| SSTS | Mach 2 attainers: Abbr. |
| SST | Mach-2 flier (abbr.) |
| SST | Mach 2 flier: Abbr. |
| SST | Former Mach 2 flier: Abbr. |
| SSTS | Former Mach 2 fliers: Abbr. |
| SST | Mach 2 flier |
| SSTS | Mach 2 breakers |
| SST | Mach 2 jet |
| SST | Mach 2 craft |
| SST | Mach 2 plane |
| SSTS | Mach-2 breakers |
| SSTS | Mach 2 fliers |
| SST | Mach-2 flier |
| SST | Mach 2 breaker |
| SSTS | Mach 2 transports |
| SSTS | Mach-2 craft |
| SSTS | Mach 2 fliers, briefly |
| SST | Former Mach 2 flier |
| SSTS | Former Mach 2 flyers |
| SSTS | Former Mach 2 craft |
| SSTS | Mach 2 fliers, once |
| SST | Mach 2 flier, once |
| SSTS | Former Mach 2 fliers, briefly |
| SST | Mach 2 flier, for short |
| SST | It flew at Mach 2 |
| SSTS | Old Mach 2 fliers, for short |
