Related Clues:
- Simple propulsion unit
- Aircraft engine
- Plane in ''Miss Saigon''?
- Fast plane engine
- Powerful engine
- Engine using a stream of compressed air
- Large airplane engine
- Missile engine
- Commuter aircraft, maybe
- Certain aircraft engine
- Certain jet engine
- Engine for missiles
- It's plain, by the sound of it, that it's sheepish not to have any prop
- The black sheep of the family engine?
- Kind of engine for an airplane