| 11. | The single-seat Nighthawk is powered by two non-afterburning General Electric F404 turbofan engines.
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| 12. | A single Rolls-Royce Spey turbofan engine serves as the AMX's powerplant.
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| 13. | A modern turbofan engine can operate at as high as 48 % efficiency.
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| 14. | The aircraft was powered by two Pratt & Whitney Canada JT15D-1 turbofan engines.
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| 15. | The aircraft was powered by two Pratt & Whitney TF30 afterburning turbofan engines.
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| 16. | The A-10 Thunderbolt II ground-attack aircraft uses fuselage-mounted podded turbofan engines.
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| 17. | All aircraft in the series are powered by two turbofan engines.
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| 18. | One proposal was the MD-94X, which was fitted with unducted fan turbofan engines.
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| 19. | The aircraft were powered by two Pratt & Whitney TF30 afterburning turbofan engines.
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| 20. | It is powered by a pair of Garrett TFE731-3B turbofan engines.
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