| Clue | Source | Date |
|---|---|---|
| Aircraft propeller? (3,6) | ||
| Whittle's invention (3,6) | The Guardian Quick | 22 Aug 2024 |
| In August, 1939, the Heinkel He-178 flew; it was the first plane successfully powered by a ... (3,6) | ||
| Plane's power source: 2 wds. | Commuter | 23 Apr 2024 |
| Gas turbine machine with black top | The Telegraph Toughie | 18 Oct 2016 |
| Airplane component, often | ||
| Means of propulsion. |